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Why do lights need to be so close but not when outside?

Posted by sandyman720 NJ (My Page) on
Thu, Apr 15, 10 at 11:37

Why do lights need to be so close to seedlings when inside but in a greenhouse or in a windowsill the light is so far away? Maybe a stupid question but I just dont get it.


Follow-Up Postings:

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RE: Why do lights need to be so close but not when outside?

Sun > fluorescent lights. By like, a lot. :)


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RE: Why do lights need to be so close but not when outside?

The sun is brighter than any lighting but we are advancing.


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RE: Why do lights need to be so close but not when outside?

Seedlings in tanning beds! :) There's a hydroponics store down the street from my office that I go to sometimes because they carry Fox Farm. Man, they have some fancy, complicated setups in there. Only thing is it can be kinda hard to get in and out of there quickly on my lunch break. The employees are pretty...mellow. :)


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RE: Why do lights need to be so close but not when outside?

Physics! The further light travels, the less intense it becomes. But the sun is extremely bright so the few extra feet are immaterial.

Mike


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RE: Why do lights need to be so close but not when outside?

Nice sleepy.... is that where your name comes from LOL?

Keriann~


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RE: Why do lights need to be so close but not when outside?

By like, a lot. :)

'Bout sums it up Sleepy. Only I think I would have said

A LOT!!!

;)

Dave


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RE: Why do lights need to be so close but not when outside?

Hehehe, noooo, Keriann. :) Actually, it was my horse's name; I used to show Quarter Horses. I swear, I am a fine, upstanding citizen who only goes to the hydroponic shop for potting soil. :)


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Lights

Maybe think of it this way....

Can you get tan under shoplights?... no

Can you burn in the sun?... yes.

The sun is MUCH more intense than a bulb. They are similar because they both shed light, but the similarities really stop there.

Not a stupid question :)

Keriann~

Sleepy- very cool. I love horses. I wanted one when I was younger but my dad got 'me/him' a lawn mower. He said we could ride it, feed it gas and no clean up! lol. It was quite a sad day though, because I really thought he bought me a horse on the farm....nope just a john deere in the horse stall..... but we called the horse lol.


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RE: Why do lights need to be so close but not when outside?

Hey Sleepy33

The last time I was in a hydroponics store, their employees were pretty mellow, too.

The place smelled to high heaven!

BTW I was there looking for lights =:)


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RE: Why do lights need to be so close but not when outside?

Keriann- Your dad was a smart man; he could have bought a new lawnmower every year and still come out way ahead! Horses are great, but showing is expensive.

Nutsaboutflowers- uh huh, suuuuure you were. Just lights. Mmmhmmm. Just kidding. :) My husband keeps telling me I'm going to get a visit from the cops to see what I'm growing with all my lights. Oh, and my hydroponics store smells weird too- they sell these really strong odor-absorber air freshener things. Gee whiz, I wonder why a gardening store would have such a big display of air fresheners?? I was thinking when I was there that if I was a cop, I'd sit outside that place all day and see who their big customers were... :)


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RE: Why do lights need to be so close but not when outside?

Keriann, that is so sad about the horse! :( I too waited my whole childhood for one. We had the space, even had the barn, but only a dog and a ferret materialized. Can't exactly strap a saddle on them... So jealous of sleepy! :)

Kim


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