bs

"bole2cant"

27/09/2003 10:03 PM

How much light does a shop need?

I guess there are standards which say how much light a shop should have. I don’
t know what they are. However, I just finished putting up my lights and I now
have some numbers which could be used as a point of real world reference.

I have built a large shop with ten-foot ceilings. Since I had about thirty
fixtures (dual, 40 watt shop lights) I used them. (Hindsight would suggest that
running continuous dual eight-footers would have been a better choice.) They
are hanging about seven inches from the ceiling. The drywall walls and ceiling
are painted white. (Actually, white base with 5/96 of an ounce of magenta per
five gallons just to make it a bit warmer than pure white. If I had it to do
over I would go with 5/48 of an ounce of magenta.)

I have a smooth, bare, gray concrete floor which will have a light almond epoxy
applied soon.

I installed 27 fixtures in an area just under 1400 sq. ft. When I turn them on
I find it is almost too bright, and will be even more so when the floor is
painted.

The numbers are:
27 x 2 = 54 four-foot, 40-watt fluorescent bulbs.
1387 / 54 = ~one 40 watt bulb per 25 sq. ft. or 1.6 watts per sq. ft.

I would now say that 1.5 watts per sq. ft. is more than enough light for my
type of building. Probably 1 watt per sq. ft. would be adequate. YMMV.

-Doug in Utah


This topic has 46 replies

Sd

Silvan

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 1:15 AM

Bay Area Dave wrote:

> perhaps if he substituted "lens" for "cornea" his statement would be
> plausible.

Perhaps indeed...

--
Michael McIntyre ---- Silvan <[email protected]>
Linux fanatic, and certified Geek; registered Linux user #243621
Confirmed post number: 18028 Approximate word count: 540840
http://www.geocities.com/Paris/Rue/5407/

DM

"Dennis M. O'Connor"

in reply to "bole2cant" on 27/09/2003 10:03 PM

06/10/2003 5:26 PM

"Andrew Barss" <[email protected]> wrote...
> I have eight 4-foot bulbs on the ceiling of my shop, which is about 260 sf.
> They're either 32 or 40 watt, and they seem about right -- lots of light,
> but not too bright

Flourescent lights have a problem with color accuracy.
I don't like them in places where color is important, like
kitchens (food color matters !) and anywhere I might
be trying to match a color (we take color samples out
of the store into the sunlight to check them).

So, my shop (about 600 sq.ft., 9' walls, vaulted ceiling,
white walls) has 20 in-ceiling "cans" for light, about
1/3rd of which have halogen floods and the rest have
75W incandescent floods. For daytime work, it has
three skylights, two medium windows, and three small ones.

It's enough.
--
Dennis M. O'Connor [email protected]

ww

[email protected] (woodcrafter)

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 4:40 PM

"bole2cant" <[email protected]> wrote in message news:<[email protected]>...
> I guess there are standards which say how much light a shop should have. I don?
> t know what they are. However, I just finished putting up my lights and I now
>
>
>
> -Doug in Utah


how many lights in an area is determined by age,,,I have 8 8' lights
plus task lights at the machines in a 24'x24' shop,,,my age 50 soon
enough,,,,

gG

[email protected] (Gfretwell)

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 4:35 AM

The book I have says you want 50 foot candles measured 30" from the floor. That
will be more on the order of 1.5 - 4 w/ft flourecent. I suppose if OSHA isn't
inspecting your shop you can go with less.

cC

[email protected] (Charlie Self)

in reply to [email protected] (Gfretwell) on 28/09/2003 4:35 AM

28/09/2003 8:43 AM

Greg Fretwell responds:

>The book I have says you want 50 foot candles measured 30" from the floor.
>That
>will be more on the order of 1.5 - 4 w/ft flourecent. I suppose if OSHA isn't
>inspecting your shop you can go with less.

What book, Greg?

Charlie Self

"Don't hit at all if it is honorably possible to avoid hitting; but never hit
soft."
Theodore Roosevelt












gG

[email protected] (Gfretwell)

in reply to [email protected] (Charlie Self) on 28/09/2003 8:43 AM

29/09/2003 3:48 AM

>What book, Greg?
>

IBM Physical Planning Guide

d

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 9:08 PM

On Sun, 28 Sep 2003 22:17:15 -0500, "SwampBug" <[email protected]>
wrote:

>so how many light fixtures do you have. . .<s>

4 four foot double fluorescents with daylight tubes.
Two tri-light ceiling fans, and 6 lamps on the individual tools.
I've tried to light the room so no shadows fall on my work.
I'm also considering putting in 3 more 30x48 windows.<g>

d

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 10:41 AM

On Sun, 28 Sep 2003 08:51:33 -0500, "SwampBug" <[email protected]>
wrote:

>My shop has 600sq ft with only 4 such fixtures. . .I suspect I am
>dangerously under illuminated. . .<s> I have 2 3x5 and 2 4x3 windows tho.
>I am thinking tho that my tubes are 35w but I could be wrong. . .there is
>this old saying about old age and memory, but I forget how it goes. . .<s>

My shop is only 252 sq feet, ten foot ceiling but I have 75 sq ft of
windows. Three 30x48 windows are high on one wall, the other 3 are placed
directly in front of the tool workstations I use most. I have a 5x5 window
for my scroll saw and a beautiful view to boot!

MD

"Michael Daly"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 5:13 PM

On 28-Sep-2003, Unisaw A100 <[email protected]> wrote:

> MyxlePixle wrote:
> >I can still hear the fixtures. My wife cannot.
>
>
> Maybe you're nuts and you don't know it.

Some folks are particularly sensitive to these things. I know a
guy who goes nuts around a computer or TV because the noise of
the ummm... flyback? whatever it's called. Drove him crazy.
No one else could hear it. Just like some folks are more sensitive
to the flicker of TVs and monitors - they _need_ to have 72Hz or
whatever even though many of us don't notice flicker at 60Hz
screen rates.

I know another person who finds fluorescent lights too blue. He
had cataract surgery and the result of removing the yellowed
cornea was to increase the amount of blue light hitting his
retina.

We might be created equal, but we don't end up equal.

Mike

BA

Bay Area Dave

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 6:34 PM

Keith, time to change your glasses: I did answer your "list" question
already. (the is one small typo - I left out the word "on")

dave

Unisaw A100 wrote:

> So Davie, you never answered, which one of your lists am I
> on.
>
> UA100

UA

Unisaw A100

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 5:01 PM

MyxlePixle wrote:
>I can still hear the fixtures. My wife cannot.


Maybe you're nuts and you don't know it.

UA100

d

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 8:30 AM

On Mon, 29 Sep 2003 09:11:06 -0500, "SwampBug" <[email protected]>
wrote:

>Goodness!, I guess I must be tragically under illuminated. . .<s>

hehe.
I'm planning for the future.
I find as I get older more light keeps my fingers safe.
If I could I would work outside. I love natural light, but dislike cold,
wind, and mosquitoes.
My girlfriend even hauls her sewing machine into my shop to do fine work,
sawdust and all.

Sd

Silvan

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 1:10 PM

Myxylplyk wrote:
> years ago. I can still hear the fixtures. My wife cannot. I still see

You're probably just attuned to it. I can hear subtle little things that
nobody else can too, but fortunately my Super Cheapass Lowball 2000 Ultra
Crappy SuX shop lights aren't on the list. I like'em fine, which is good,
'cause that's all I could afford after my little stupid electrical mishap
where I let the smoke out of every single one of my lights.

--
Michael McIntyre ---- Silvan <[email protected]>
Linux fanatic, and certified Geek; registered Linux user #243621
Confirmed post number: 18013 Approximate word count: 540390
http://www.geocities.com/Paris/Rue/5407/

Ba

B a r r y B u r k e J r .

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 12:55 PM

On Sat, 27 Sep 2003 22:03:16 -0600, "bole2cant"
<[email protected]> wrote:

>I would now say that 1.5 watts per sq. ft. is more than enough light for my
>type of building. Probably 1 watt per sq. ft. would be adequate. YMMV.


A huge variable is ceiling height. My 7' ceiling basement shop seems
to need twice the light as a 9-10 foot ceiling would require.

The light never gets a chance to spread out with 7' ceilings.

Barry

UA

Unisaw A100

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 7:27 PM

His Shrillness:
>still spreading good thoughts, Keith?



Hey Davie, where's abouts am I one your enemies list? How
many lists is it you've got going anyway?

UA100, wondering, I've never seen TGD and Nixon together,
hmmmmm?...

MD

"Michael Daly"

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 3:39 AM


On 28-Sep-2003, Bay Area Dave <[email protected]> wrote:

> perhaps if he substituted "lens" for "cornea" his statement would be
> plausible.

Ooops, you're right - it's the lens.

Mike

Rw

Rico

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 9:30 AM

Michael Daly wrote:
> On 28-Sep-2003, Unisaw A100 <[email protected]> wrote:
>
> > Mixlepixle wrote:
> > >i can't stand the light or noise of fluorescent fixtures.
> >
> > Ahhh, but that only means you've bought the cheap ass
> > models. I didn't spend entirely too much more (one, maybe
> > two price jumps over *shop lights*) and mine have nary a
> > humlette after 3 years.
>
> If you also up the price you pay on the lights themselves,
> you can get the full spectrum lights. Colour balance is
> closer to that of sunlight.
>
> Mike
>
The good ones don't have the florescent flicker that drives
some people nuts either.



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MD

"Michael Daly"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 10:05 PM

On 28-Sep-2003, "Rick" <[email protected]> wrote:

> Cornea blocks UV light .

As you age, the yellowing of the cornea increases the UV
blockage and increases the filtering of the blue end of the
spectrum as well. An astronomy enthusiast I know had his
cornea removed for cataracts and raved over the new hues of
blue and violet he could see.

Mike

bR

bonomi@c-ns. (Robert Bonomi)

in reply to "bole2cant" on 27/09/2003 10:03 PM

30/09/2003 1:41 AM

In article <[email protected]>,
Unisaw A100 <[email protected]> wrote:
>
>
>So Davie, you never answered, which one of your lists am I
>on.
>
>UA100

I peeked. It's the third one from the left. Hope that helps. <grin>

Rn

"Rick"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 9:36 PM


"Michael Daly" <[email protected]> wrote in message
news:[email protected]...
>
> Some folks are particularly sensitive to these things. I know a
> guy who goes nuts around a computer or TV because the noise of
> the ummm... flyback? whatever it's called. Drove him crazy.
> No one else could hear it. Just like some folks are more sensitive
> to the flicker of TVs and monitors - they _need_ to have 72Hz or
> whatever even though many of us don't notice flicker at 60Hz
> screen rates.

15,570 kHz for standard TV ... that's the horizontal sweep rate ... can go
higher for the various high color modes (vga, svga, etc).

> I know another person who finds fluorescent lights too blue. He
> had cataract surgery and the result of removing the yellowed
> cornea was to increase the amount of blue light hitting his
> retina.

Cornea blocks UV light ... flourescent light is a UV light with UV to
visible phosphor coating inside glass ... but some UV does escape. Research
will show that during WWII, senior citizens had their corneas removed so
they could then watch for UV light comms between enemy vessels off the US
east coast.

Rick


BA

Bay Area Dave

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 12:48 AM

perhaps if he substituted "lens" for "cornea" his statement would be
plausible.

dave

Silvan wrote:

> Michael Daly wrote:
>
>
>>spectrum as well. An astronomy enthusiast I know had his
>>cornea removed for cataracts and raved over the new hues of
>>blue and violet he could see.
>
>
> I don't believe *that* for a minute either.
>
> Methinks you two need to go look at an anatomy book and have a look at what
> a cornea is.
>

MD

"Michael Daly"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 3:57 PM

On 28-Sep-2003, Unisaw A100 <[email protected]> wrote:

> Mixlepixle wrote:
> >i can't stand the light or noise of fluorescent fixtures.
>
> Ahhh, but that only means you've bought the cheap ass
> models. I didn't spend entirely too much more (one, maybe
> two price jumps over *shop lights*) and mine have nary a
> humlette after 3 years.

If you also up the price you pay on the lights themselves,
you can get the full spectrum lights. Colour balance is
closer to that of sunlight.

Mike

UA

Unisaw A100

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 1:30 AM

So Davie, you never answered, which one of your lists am I
on.

UA100

UA

Unisaw A100

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 10:25 AM

Mixlepixle wrote:
>i can't stand the light or noise of fluorescent fixtures.

Ahhh, but that only means you've bought the cheap ass
models. I didn't spend entirely too much more (one, maybe
two price jumps over *shop lights*) and mine have nary a
humlette after 3 years.

'Sides, once you have machines running, the hum goes away.

UA100

Sd

Silvan

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 8:04 PM

Michael Daly wrote:

> spectrum as well. An astronomy enthusiast I know had his
> cornea removed for cataracts and raved over the new hues of
> blue and violet he could see.

I don't believe *that* for a minute either.

Methinks you two need to go look at an anatomy book and have a look at what
a cornea is.

--
Michael McIntyre ---- Silvan <[email protected]>
Linux fanatic, and certified Geek; registered Linux user #243621
Confirmed post number: 18024 Approximate word count: 540720
http://www.geocities.com/Paris/Rue/5407/

bs

"bole2cant"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 11:50 AM


"Myxylplyk" <[email protected]> wrote in message
news:[email protected]...
>
> i can't stand the light or noise of fluorescent fixtures.

I intended to say, these are the cheapest shop lights I could buy--from Sears
probably ten years ago. Less than $7.00 including two tubes. When they are all
on I can just barely hear a faint hum. Turn off one bank and it is quiet. I'm
hoping that they don't deteriorate over time.

Keith, I think being in your shop would be similar to the light I saw when I
shorted the 3-phase circuit to ground when checking breaker numbers. After two
weeks the thumb doesn't have any open cracks now, and the tan oval after-image
disappeared in a couple of hours!

If the "General green" soaks up too much light, I have 5 outlets designated for
lights, but unused, where I felt I didn't need more light.

-Doug





AB

Andrew Barss

in reply to "bole2cant" on 27/09/2003 10:03 PM

06/10/2003 11:32 PM

Gfretwell <[email protected]> wrote:
: The book I have says you want 50 foot candles measured 30" from the floor. That
: will be more on the order of 1.5 - 4 w/ft flourecent. I suppose if OSHA isn't
: inspecting your shop you can go with less.


I have eight 4-foot bulbs on the ceiling of my shop, which is about 260 sf.
They're either 32 or 40 watt, and they seem about right -- lots of light,
but not too bright (floor is a medium brown color). That's about 1 watt per
sf (ceilings are 10 feet) (assuming 32 watts).

-- Andy Barss

BA

Bay Area Dave

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 6:11 PM

groan! Tom, you could also use some new writers....

dave

Tom Watson wrote:

> On Sun, 28 Sep 2003 17:01:44 GMT, Unisaw A100 <[email protected]>
> wrote:
>
>
>>Maybe you're nuts and you don't know it.
>
>
> Man, that was so low, even Tennessee Ernie Ford couldn't sing it.
>
>
> Regards, Tom
> Thomas J. Watson-Cabinetmaker
> Gulph Mills, Pennsylvania
> http://users.snip.net/~tjwatson

Sd

Silvan

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 4:01 PM

Michael Daly wrote:

> Some folks are particularly sensitive to these things. I know a
> guy who goes nuts around a computer or TV because the noise of
> the ummm... flyback? whatever it's called. Drove him crazy.

Yeah, that's me. It's like someone jabbing an ice pick into my brain 60
times a second.

--
Michael McIntyre ---- Silvan <[email protected]>
Linux fanatic, and certified Geek; registered Linux user #243621
Confirmed post number: 18017 Approximate word count: 540510
http://www.geocities.com/Paris/Rue/5407/

HF

"Herman Family"

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 3:28 AM

The lens removal and subsequent ability to see blue isn't surprising.
Apparently people in bright equatorial areas have had enough UV exposure
that they do not see the color blue very well. Some languages from these
regions supposedly do not even have a word for "blue".

Michael


"Bay Area Dave" <[email protected]> wrote in message
news:[email protected]...
> perhaps if he substituted "lens" for "cornea" his statement would be
> plausible.
>
> dave
>
> Silvan wrote:
>
> > Michael Daly wrote:
> >
> >
> >>spectrum as well. An astronomy enthusiast I know had his
> >>cornea removed for cataracts and raved over the new hues of
> >>blue and violet he could see.
> >
> >
> > I don't believe *that* for a minute either.
> >
> > Methinks you two need to go look at an anatomy book and have a look at
what
> > a cornea is.
> >
>

Sd

Silvan

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 7:47 PM

Rick wrote:

> Research will show that during WWII, senior citizens had their corneas
> removed so they could then watch for UV light comms between enemy vessels
> off the US east coast.

Their *corneas*???

Nah. I don't believe that for a minute.

--
Michael McIntyre ---- Silvan <[email protected]>
Linux fanatic, and certified Geek; registered Linux user #243621
Confirmed post number: 18023 Approximate word count: 540690
http://www.geocities.com/Paris/Rue/5407/

BA

Bay Area Dave

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 10:39 PM

jeez, Keith, why are you taking exception to my innocuous comment?

You are inferring bad thoughts from me again, probably due to the loss
of your fragile sense of humor.

BTW, you revealed your age yesterday. You surprised me. I thought you
would be older. Your level of crankiness usually takes a bit longer to
develop.

SMILE, KEITH! I promise it won't kill you.

Sorry you aren't any list of mine. I just enjoy a bit of repartee.
(When it's in good fun).

TGD? (that one flew right over...)

just me

Unisaw A100 wrote:

> His Shrillness:
>
>>still spreading good thoughts, Keith?
>
>
>
>
> Hey Davie, where's abouts am I one your enemies list? How
> many lists is it you've got going anyway?
>
> UA100, wondering, I've never seen TGD and Nixon together,
> hmmmmm?...

Mm

"Myxylplyk"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 12:50 PM


"bole2cant" <[email protected]> wrote in message
news:[email protected]...
<snip>
> I would now say that 1.5 watts per sq. ft. is more than enough light for my
> type of building. Probably 1 watt per sq. ft. would be adequate. YMMV.
>

i can't stand the light or noise of fluorescent fixtures.
i used ten 150W Halogen bulbs in my two car shop. light tan painted plywood walls. open
ceiling, bare fixtures, no reflectors, new concrete floor.
i call it my stadium lighting. i have it on three switches, 2 switches with 2 fixtures and
one switch of 6 fixtures.
i do use task lights as needed.
yes, i'm creeping up on the half century mark too.

just my two cents,
Myx

bR

bonomi@c-ns. (Robert Bonomi)

in reply to "bole2cant" on 27/09/2003 10:03 PM

30/09/2003 1:33 AM

In article <[email protected]>,
Silvan <[email protected]> wrote:
>
>
>Michael Daly wrote:
>
>> spectrum as well. An astronomy enthusiast I know had his
>> cornea removed for cataracts and raved over the new hues of
>> blue and violet he could see.
>
>I don't believe *that* for a minute either.
>
>Methinks you two need to go look at an anatomy book and have a look at what
>a cornea is.

*BELIEVE* it. Today, there are artificial replacement lenses available.

Historically after the surgury, one wore glasses with *very* thick lenses.
Almost hemispherical.

Years ago, I worked in an opthalmic lens laboratory. We had a separate
machine for griding 'cataract' lenses -- for glasses, not implantable.

I think it was powered up _twice_ in the 18+ months I worked there.

N

Not_that_Dave

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 1:19 PM

On Sun, 28 Sep 2003 16:01:18 -0400, Silvan
<[email protected]> wrote:

>Michael Daly wrote:
>
>> Some folks are particularly sensitive to these things. I know a
>> guy who goes nuts around a computer or TV because the noise of
>> the ummm... flyback? whatever it's called. Drove him crazy.
>
>Yeah, that's me. It's like someone jabbing an ice pick into my brain 60
>times a second.

Ahhh yes, the old ice pick lobotomy trick. I know it well!

TW

Tom Watson

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 1:17 PM

On Sun, 28 Sep 2003 17:01:44 GMT, Unisaw A100 <[email protected]>
wrote:

>Maybe you're nuts and you don't know it.

Man, that was so low, even Tennessee Ernie Ford couldn't sing it.


Regards, Tom
Thomas J. Watson-Cabinetmaker
Gulph Mills, Pennsylvania
http://users.snip.net/~tjwatson

UA

Unisaw A100

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 11:16 AM

Doug in Utah wrote:
>YMMV.

I'll say. My set up has 20 four foot fixtures (40 tubes) at
about 7'. My walls are white though I didn't fret over the
additives making up the color (colour David) and my floor is
green, OK, it's sea foam green. I don't have a finished
ceiling. The shop is a wee bit over 600 sq. ft.

Conclusion, it's too dark. Don't get me wrong. It's more
than adequate to get around, see everything and read by but
I could stand for it to be a little brighter. Of course my
eyes will also be celebrating a half century birthday in a
couple/few years.

UA100

cC

[email protected] (Charlie Self)

in reply to Unisaw A100 on 28/09/2003 11:16 AM

28/09/2003 11:46 AM

Unisaw A100 writes:

>Doug in Utah wrote:
>>YMMV.
>
>I'll say. My set up has 20 four foot fixtures (40 tubes) at
>about 7'. My walls are white though I didn't fret over the
>additives making up the color (colour David) and my floor is
>green, OK, it's sea foam green. I don't have a finished
>ceiling. The shop is a wee bit over 600 sq. ft.

Yes. My VA shop has 1200 sf. The ceiling at 9' is white, with 16 two tube
fluors, for a total of 32. The light is ample, and evenly spread: big
difference is simply a semi-gloss white ceiling. Walls are unpainted OSB, floor
is gray.

And I've had cataract surgery since I got to use the shop much, so it should be
even closer to correct.

But that's not to say that close up work doesn't require task lighting. It
does.

When I get back--anyone wanna buy a small house in WV?--I have 2 more two tube
fixtures to place around, plus a couple four tubers. They may get set directly
over the base cabinet area, with maybe one over the main workbench.

Charlie Self

"Don't hit at all if it is honorably possible to avoid hitting; but never hit
soft."
Theodore Roosevelt












BA

Bay Area Dave

in reply to "bole2cant" on 27/09/2003 10:03 PM

30/09/2003 1:58 AM

Robert, I'll never forget the time I saw an old-timer Navy man in
Olathe, Kansas, at the Naval Air Station, circa 1964, sporting what
could have passed for Coke bottle bottoms. He said he had cataracts.
The glasses were dark green. Is there a reason they were green instead
of gray, other than HIM having asked for that color? I presume it was
due to light sensitivity, but you don't often see green sunglasses.

dave

Robert Bonomi wrote:

> In article <[email protected]>,
> Silvan <[email protected]> wrote:
>
>>
>>Michael Daly wrote:
>>
>>
>>>spectrum as well. An astronomy enthusiast I know had his
>>>cornea removed for cataracts and raved over the new hues of
>>>blue and violet he could see.
>>
>>I don't believe *that* for a minute either.
>>
>>Methinks you two need to go look at an anatomy book and have a look at what
>>a cornea is.
>
>
> *BELIEVE* it. Today, there are artificial replacement lenses available.
>
> Historically after the surgury, one wore glasses with *very* thick lenses.
> Almost hemispherical.
>
> Years ago, I worked in an opthalmic lens laboratory. We had a separate
> machine for griding 'cataract' lenses -- for glasses, not implantable.
>
> I think it was powered up _twice_ in the 18+ months I worked there.

TD

Tim Douglass

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 4:31 PM

On Sun, 28 Sep 2003 17:13:35 GMT, "Michael Daly"
<[email protected]> wrote:

>On 28-Sep-2003, Unisaw A100 <[email protected]> wrote:
>
>> MyxlePixle wrote:
>> >I can still hear the fixtures. My wife cannot.
>>
>>
>> Maybe you're nuts and you don't know it.
>
>Some folks are particularly sensitive to these things. I know a
>guy who goes nuts around a computer or TV because the noise of
>the ummm... flyback? whatever it's called. Drove him crazy.
>No one else could hear it.

I used to be able to hear that too. Several years running farm
equipment, shop tools and chain saws seems to have cured the problem.

Tim Douglass

http://www.DouglassClan.com

Sw

"SwampBug"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 8:51 AM

My shop has 600sq ft with only 4 such fixtures. . .I suspect I am
dangerously under illuminated. . .<s> I have 2 3x5 and 2 4x3 windows tho.
I am thinking tho that my tubes are 35w but I could be wrong. . .there is
this old saying about old age and memory, but I forget how it goes. . .<s>
--
SwampBug
---------------------
"Unisaw A100" <[email protected]> wrote in message
news:[email protected]...
> Doug in Utah wrote:
> >YMMV.
>
> I'll say. My set up has 20 four foot fixtures (40 tubes) at
> about 7'. My walls are white though I didn't fret over the
> additives making up the color (colour David) and my floor is
> green, OK, it's sea foam green. I don't have a finished
> ceiling. The shop is a wee bit over 600 sq. ft.
>
> Conclusion, it's too dark. Don't get me wrong. It's more
> than adequate to get around, see everything and read by but
> I could stand for it to be a little brighter. Of course my
> eyes will also be celebrating a half century birthday in a
> couple/few years.
>
> UA100

Sw

"SwampBug"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 10:17 PM

so how many light fixtures do you have. . .<s>

--
SwampBug
---------------------
<[email protected]> wrote in message
news:[email protected]...
> On Sun, 28 Sep 2003 08:51:33 -0500, "SwampBug" <[email protected]>
> wrote:
>
> >My shop has 600sq ft with only 4 such fixtures. . .I suspect I am
> >dangerously under illuminated. . .<s> I have 2 3x5 and 2 4x3 windows tho.
> >I am thinking tho that my tubes are 35w but I could be wrong. . .there is
> >this old saying about old age and memory, but I forget how it goes. .
.<s>
>
> My shop is only 252 sq feet, ten foot ceiling but I have 75 sq ft of
> windows. Three 30x48 windows are high on one wall, the other 3 are placed
> directly in front of the tool workstations I use most. I have a 5x5 window
> for my scroll saw and a beautiful view to boot!
>
>

Sw

"SwampBug"

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 9:11 AM

Goodness!, I guess I must be tragically under illuminated. . .<s>

--
SwampBug
---------------------
<[email protected]> wrote in message
news:[email protected]...
> On Sun, 28 Sep 2003 22:17:15 -0500, "SwampBug" <[email protected]>
> wrote:
>
> >so how many light fixtures do you have. . .<s>
>
> 4 four foot double fluorescents with daylight tubes.
> Two tri-light ceiling fans, and 6 lamps on the individual tools.
> I've tried to light the room so no shadows fall on my work.
> I'm also considering putting in 3 more 30x48 windows.<g>

BA

Bay Area Dave

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 6:10 PM

still spreading good thoughts, Keith?

dave

Unisaw A100 wrote:

> MyxlePixle wrote:
>
>>I can still hear the fixtures. My wife cannot.
>
>
>
> Maybe you're nuts and you don't know it.
>
> UA100

DB

"David Binkowski"

in reply to "bole2cant" on 27/09/2003 10:03 PM

29/09/2003 4:26 AM


My lights put out a near defeaning hum, like the hum of a million
locusts swarming all over my body. I was plagued by this whenever
I was in the basement using those God forsaken lights. I thought it
would drive me mad, in fact. Then I turned off all the fluorescents
and went outside and the hum was still there, so I guess its not the
lights at all !


--
The software said it ran under Windows 98/NT/2000, or better.
So I installed it on Linux...
"Myxylplyk" <[email protected]> wrote in message
news:[email protected]...
>
> "Michael Daly" <[email protected]> wrote in message
> news:[email protected]...
> > On 28-Sep-2003, Unisaw A100 <[email protected]> wrote:
> >
> > > <snipped myxylplyk name butchery> wrote:
> > > >i can't stand the light or noise of fluorescent fixtures.
> > >
> > > Ahhh, but that only means you've bought the cheap ass
> > > models. I didn't spend entirely too much more (one, maybe
> > > two price jumps over *shop lights*) and mine have nary a
> > > humlette after 3 years.
> >
> > If you also up the price you pay on the lights themselves,
> > you can get the full spectrum lights. Colour balance is
> > closer to that of sunlight.
> >
> Both Mr Bohn and Mr Daily made valid points, however, they still don't
apply. I bought
> the best fixtures recommended to me buy a lighting consultant and the
sunlight balanced
> tubes and installed them in my basement craft area. (Flytying, tackle
craft, rod building,
> wife's sewing) This is a 20 x 25 additional basement space under an
addition I put on 4
> years ago. I can still hear the fixtures. My wife cannot. I still see
the light as blue
> and don't like it. I guess i just dislike fluorescent light.
> as a significant downside, tube storage is a pain. Now i hang them
between floor joists
> but I don't care for it.
> The halogen bulbs are stored in a small box in the dead space under my
bandsaw cabinet.
>
> Thanks for the suggestions anyway,
> Myx
>
>

Mm

"Myxylplyk"

in reply to "bole2cant" on 27/09/2003 10:03 PM

28/09/2003 4:37 PM


"Michael Daly" <[email protected]> wrote in message
news:[email protected]...
> On 28-Sep-2003, Unisaw A100 <[email protected]> wrote:
>
> > <snipped myxylplyk name butchery> wrote:
> > >i can't stand the light or noise of fluorescent fixtures.
> >
> > Ahhh, but that only means you've bought the cheap ass
> > models. I didn't spend entirely too much more (one, maybe
> > two price jumps over *shop lights*) and mine have nary a
> > humlette after 3 years.
>
> If you also up the price you pay on the lights themselves,
> you can get the full spectrum lights. Colour balance is
> closer to that of sunlight.
>
Both Mr Bohn and Mr Daily made valid points, however, they still don't apply. I bought
the best fixtures recommended to me buy a lighting consultant and the sunlight balanced
tubes and installed them in my basement craft area. (Flytying, tackle craft, rod building,
wife's sewing) This is a 20 x 25 additional basement space under an addition I put on 4
years ago. I can still hear the fixtures. My wife cannot. I still see the light as blue
and don't like it. I guess i just dislike fluorescent light.
as a significant downside, tube storage is a pain. Now i hang them between floor joists
but I don't care for it.
The halogen bulbs are stored in a small box in the dead space under my bandsaw cabinet.

Thanks for the suggestions anyway,
Myx


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