Is restrike a myth?

mistergreen · 11-09-2007, 08:41 PM

Quote:

Originally Posted by puchisapo

man, you know what i really wish somebody would make--i mention this because the spiral CF's would be the right kind of bulb--is a reflector that creates a spotlight beam. a fixture thus equipped could be hung closer to the ceiling, permit less light to spill into the room and create a much nicer view from above of an open-top tank.

is there anything like that out there?

a really good spot light?
You see them in museums and such... Looks pricey.

jbolinger · 11-10-2007, 12:42 AM

Quote:

Originally Posted by fishscale

.... I would say that restrike exists, but that it is trivial.

Exactly my point. So we are in agreement on this.

One more point to make: Go Bucks! Beat M*******!

Jim

lemonlime · 11-10-2007, 02:34 AM

Interesting book on #3
http://books.google.com/books?id=JoELZdSUzKEC

A little over my head lol, but I'm wading through it...

**mpodolan** · 11-10-2007, 03:07 AM

Quote:

Originally Posted by jbolinger

One more point to make: Go Bucks! Beat M*******!

Jim

Hey fishscale, it looks like we might have a little rivalry with a few people on the board here! Go Blue!

Sorry for the hijack

lemonlime · 11-10-2007, 03:24 AM

bulb Lumens/watt Eq T12 watts
T12 58.9 1
T10 62.3 1.06
T8 91.1 1.55
T5 104 1.77
T5HO 92.6 1.57
MH 84.1 1.43
CF 79.4 1.35

Runs cooler, better profile for parabolic reflectors, nearly the same cost, make t5/linear better imo.

from Sylvania catalog

Compact Fl. lamp (Dulux-L), 40W, T5, CCT=4100K, CRI=82, length=22.6",Initial >lumens=3150

Similar lamp - 55W - 4800Lm
Pentron High output T-5 39W, 36" 4100K, CRI=82, 3500 Lm
Octron 700 series lamp 40W, T-8, 60" length, CCT=4100K, CRI=75, 3550 Lm,
Octron 800 series lamp 40W, T-8, 60" length, CCT=4100K, CRI=82, 3775 Lm,

That just initial lumens, take into account better reflectors and heat
Also as Fishscale mentioned, this is almost certainly total output not taking into account restrike. So 10% less light just from the two sides being close.....

11-10-2007, 02:34 AM	#18 (permalink)
lemonlime Planted Member (View User Tanks) PTrader: (1) Join Date: Sep 2006 Location: Seattle, WA Posts: 294	Interesting book on #3 http://books.google.com/books?id=JoELZdSUzKEC A little over my head lol, but I'm wading through it... __________________ he's bad! he's mean! he's a space cowboy in a space machine! he's bad! he's number one! he's a space cowboy with a laser gun!

11-10-2007, 03:24 AM	#20 (permalink)
lemonlime Planted Member (View User Tanks) PTrader: (1) Join Date: Sep 2006 Location: Seattle, WA Posts: 294	bulb Lumens/watt Eq T12 watts T12 58.9 1 T10 62.3 1.06 T8 91.1 1.55 T5 104 1.77 T5HO 92.6 1.57 MH 84.1 1.43 CF 79.4 1.35 Runs cooler, better profile for parabolic reflectors, nearly the same cost, make t5/linear better imo. from Sylvania catalog Compact Fl. lamp (Dulux-L), 40W, T5, CCT=4100K, CRI=82, length=22.6",Initial >lumens=3150 Similar lamp - 55W - 4800Lm Pentron High output T-5 39W, 36" 4100K, CRI=82, 3500 Lm Octron 700 series lamp 40W, T-8, 60" length, CCT=4100K, CRI=75, 3550 Lm, Octron 800 series lamp 40W, T-8, 60" length, CCT=4100K, CRI=82, 3775 Lm, That just initial lumens, take into account better reflectors and heat Also as Fishscale mentioned, this is almost certainly total output not taking into account restrike. So 10% less light just from the two sides being close..... __________________ he's bad! he's mean! he's a space cowboy in a space machine! he's bad! he's number one! he's a space cowboy with a laser gun!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Advertisements
Get Rid of Advertisements