Science: Health: Urination
Golden Arc of Enlightenment   (+4, -3)  [vote for, against]
Piss in the dark

Have a lightbulb, high-output LED, or some other light-producing fixture installed inside your bladder. I'll leave you to decide on what method we'll use to power the device.

On urination, the light should bounce about inside the urination stream, producing an unearthly golden arc of light.
-- zen_tom, Oct 17 2006

Just consume a couple of ounces of vitamin B complex.
-- skinflaps, Oct 17 2006

Colonic option available for those who want light to shine from that orifice as well.
-- zen_tom, Oct 17 2006

The internal reflection you're depending on--the light pipe effect--is dependent on the difference between the index of refractions of urine and air, but the difference is not much between urine and flesh, so most of the light will be absorbed on the way out. Also, the urine stream must be continuous for this to work.
-- ldischler, Oct 17 2006

[ldischler]sometimes you worry me.
-- skinflaps, Oct 17 2006

[skinflaps] Me does one come across this knowledge? //the difference is not much between urine and flesh// isn't it? If that *is* the case, the problem can be allayed by conducting a simple urethral polishing procedure.
-- zen_tom, Oct 17 2006

The index of refraction of water is 1.33. For the epidermis, it’s about 1.43. So the difference is 0.10, rather small. The difference between air and water is .33, three times greater. And the difference between the plastics used in some eyeglasses and air is .71. The larger the number, you see, the more light can be reflected internally.
-- ldischler, Oct 17 2006

If you really wanted this to work, then do it the other way around: Put the LEDs in the urinal, and turn them on wherever the urine falls. Hopefully, they could light up the stream, and your pecker.
-- Ling, Oct 17 2006

If you *really* wanted this to work, you could simply install a brighter light - as long as there is some refraction difference, there ought to be enough to light the way in low light conditions.

A small dimswitch installed in one of the testicles might help the user tweak their intensity from ghostly glow, all the way up to a fully resplendent beam of sunshine.
-- zen_tom, Oct 17 2006

If you **really** wanted this to work, you could fit the innards of one of those shake-to-charge torches on an appropriate part.
-- Ling, Oct 17 2006

i'm just popping out for a cheeseburger with fries. can I get anyone anything?
-- po, Oct 17 2006

no-one likes internal lights, but I do +
-- xenzag, Oct 17 2006

As the reflection is internal within the urine stream, there will be no such "unearthly golden arc of light".

The light would be emited from the end point of the stream, scattered and fleeting. This in itself would be a cool effect, so I'd bun you if I could.
-- Texticle, Oct 17 2006

It might sparkle attractively due to the irregularity of the stream. Or not.

Perhaps, I should accept that this idea is just piss.

[po] a cheeseburger would be lovely, if you're still on your way out.
-- zen_tom, Oct 18 2006

Is it just me, or is there currently an unusual wealth of urine-related ideas on the HB? Have I missed something? Was it world wee-wee day and nobody told me?
-- squeak, Oct 18 2006

When you gotta go, you gotta go...
-- theleopard, Oct 18 2006

//Also, the urine stream must be continuous for this to work.//

Is yours not? Do you urinate using pulse-code modulation?
-- webfishrune, Oct 18 2006

If your stream is continuous, you're pissing oil.
-- ldischler, Oct 18 2006

If I were pissing oil would I be hanging around with you lot?
-- Galbinus_Caeli, Oct 18 2006

As long as we don't mix a lightbulb's filament with your odd and assumingly rather unhealthy oil-piss no-one will come away with 3rd degree burns on their testes.
-- theleopard, Oct 18 2006

Po, could you get us a few more cases of beer to help with experiments?

Perhaps with a powerful enough hydroelectric/piezo/shake generator,we could simply shine light THROUGH the penile flesh, thus producing a light-up male member.

Those of us using the shake-to-power device would of course need warning stickers to keep folks with pace makers... and of course... "If you shake it more than twice, you're playing with it."
-- ye_river_xiv, Oct 19 2006

//simply shine light THROUGH the penile flesh//
Ah, that solves the problem of the different refractive indexes. The light can be introduced easily at this point. Some will travel straight on, some will go "upsource", and some will go in the direction of interest. It will need a powerful torch. I think I will resist the urge to experiment, as I can't think of an easy way to explain why I need to take a large torch to the bathroom.
-- Ling, Oct 19 2006

po, I think I'll go with you, if you don't mind.
-- NotTheSharpestSpoon, Oct 19 2006

I go alone

-- po, Oct 19 2006

random, halfbakery