ghetto reflective material
- Thread starter fish601
- Start date
Airwave
Well-Known Member
The most ghetto thing I can think of is cheap mat white paint.
IceWaterBong87
Well-Known Member
flat white paint
or sheets of poly white & black
or sheets of poly white & black
F
Fallen Buckshot
Guest
those emergency blankets for survival and shit are cheap and very reflective
yep they about 2$ and are about 6x6ft i swear by em
yep they about 2$ and are about 6x6ft i swear by em
newb19547
Well-Known Member
Thats what I use
Airwave
Well-Known Member
Aren't they made of Mylar?
Green Cross
Well-Known Member
Anything white - even copy paper - will reflect better than wood.
KaleoXxX
Well-Known Member
i think they are atleast coated in it
fallen buckshot, newb, what is that shit called cuz i went to wallie world to get more and asked for it and the person looked at me like i was on fire or had 2 heads or something for like 2 mins and they said they never heard of it
F
Fallen Buckshot
Guest
just go to the camping section its usualy in a bin for 2$ says emergency blanket made by coleman or camptrails
Astaldoath
Well-Known Member
Why not use aluminum foil?
F
Fallen Buckshot
Guest
the aluminum foil is harder to work with ?
the blankets come in like 6x6 sheets so less taping etc
the blankets come in like 6x6 sheets so less taping etc
KaleoXxX
Well-Known Member
thatnks bro, they rpobly looked at me funny cuz i described it like "where do you guys keep the... aaa... those emergency ...aaaa ... shiny blanket thingys?"
i guess the thing with alluminum is that it keeps heat in and one side is reflecteve to the extreme and one side obsorbs light
i guess the thing with alluminum is that it keeps heat in and one side is reflecteve to the extreme and one side obsorbs light
Airwave
Well-Known Member
TeaTreeOil
Well-Known Member
No, both sides of the foil reflect light and heat equally well. There's a very negligible difference. Aluminum is mostly reflective due to it's atomic properties(as are most metals). The surface smoothness will change how much it acts like a mirror, or how it'll act more like, uh, titanium white paint(diffuse, yet significantly specular). Though white paint is still more diffuse than either side of the foil. This has nothing to do with absorption of light, but where the light is directed when reflected off the surface.
Emergency blankets rely on aluminum to be reflective. There's a very small difference between the reflectance of emergency blankets, foil, and aluminized Mylar. The major differences is where the light is reflected, Mylar is the most mirror-like, and will have the best intense reflection. Foil and emergency blankets will spread light more, giving a less intense reflection(mirror image). Though the total amount of light reflected off these surfaces(reflectance) is nearly identical.
Aluminum is 75% resistant to convected heat transfer, and over 95% resistant to radiant heat transfers. A simple fan will keep the room cool, as heat will not be absorbed by the room with an aluminum barrier.
TeaTreeOil
Well-Known Member
Again, aluminized Mylar is the best intense reflector. It has the best properties to create hot spots. Especially with it's 'wavey nature'. The parabolic trenches, common with hung Mylar, will certainly focus light and reflect it unevenly and possibly create hot spots.
Aluminum foil is too diffuse to casually create hot spots. It's nearly 50% diffuse! Wrinkles/crinkles and other imperfections would make it difficult to even intentionally focus light into a hot spot.
Mylar is such a good intense reflector, that when used in a solar oven(using the sun's light to cook food, the idea is to intentionally create a hot spot by focusing the sun's rays) the aluminized Mylar often melts, smokes, and distorts wildly. Foil has none of those issues, but it doesn't create quite as intense of heat as aluminized Mylar will, due to the superb smoothness(which gives it more intense/mirror-like reflective properties) of aluminized Mylar.