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/sci/ - Science & Math

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4788176 No.4788176 [Reply] [Original]

can someone name some black-colored liquids that are relatively safe for home use and that don't stick to glass? like if you filled a glass with it, then poored it out, none of it would stay in the glass.

i wanna build a window where i can fill it with fluid to block out the sunlight, then to let the light in it drains away

>> No.4788183

just use food colouring? though it will probably fade over time due to UV

>> No.4788184

Easier to use a clear plastic, both in terms of making/sealing it and in terms of finding things that won't stick.

At double pane window thickness, though, you're going to have a hard time finding anything opaque enough. Molasses, maybe.

>> No.4788201

Draw your curtains.

>> No.4788198

>>4788184
Adding to that, you would lose most of the insulation effect of double-paned glass because the liquid would be an effective thermal conductor.

I suppose Coke isn't dark enough.

If you have enough money you could get a magnetic slurry and do some cool shit with magnets. You would need a lot though.

You could just buy window coverings that are made to block 100% of the light, but I guess that would be too cheap, reliable and simple, huh?

>> No.4788203
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4788203

>>4788183
So what's a liquid that won't stick to glass very well? based on googling i'm guessing alcohol would work well.

>>4788184
like >>4788183 said, i was gonna add a bunch of food coloring to make it darker.


and i actually don't want to use it in the home, i was thinking of the windows in a car. drive around with clear windows, lock the car, and it automatically pumps them full making them black.

you could even pump it through a stirling engine, to take that solar heat and turn it into delicious, nutritious energy.

>> No.4788308

Fill your windows with mercury! light won't shine through and it will drain fast

>> No.4788316

>>4788203
You do realise there are simpler existing systems.

http://en.wikipedia.org/wiki/Smart_glass

>> No.4788338

Tinfoil. Keeps the room cool, too

But it makes you look like you live in a crack shack.

>> No.4788364
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4788364