Why are most Airplanes painted white? Is painting them Black bad luck?
- Thread starter rtm862
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Sorry, I am not trying to piss on your batteries BUT you don't get closer to the sun when you go up....
The sun is not above the earth....
If I remember well, the sun rays hit the earth at an angle of about 5 degrees and so the only way it can get hotter on earth is if the angle is increased...
This is why I love BGOL...the only place where people arguing about paint can be amusing
like some sort of bizzaro Seinfeld universe....anyway my take on it is, that all the paint probably weighs the same but, it would take more coats to paint certain shades of colors, and that's where the added weight would come in.
like some sort of bizzaro Seinfeld universe....anyway my take on it is, that all the paint probably weighs the same but, it would take more coats to paint certain shades of colors, and that's where the added weight would come in.
The suns rays may hit earth at an angle, but that's light energy (photonic) not radiant energy (heat).
Heat energy is more concerned with distance from the source than angle (all else being equal).
Turn your stove's burner on - stand 10 ft away and put your hand up. Now stand 8 ft away and put your hand up.
I normally don't do this...
But if your theory is true then explain where the ice during hay storm comes from?
Hint:
The sun is not above the earth!
http://ia301539.us.archive.org/2/items/OrbitsAndKeplersLaws/Keplers_Laws_fullscreen_512kb.mp4?OrbitsAndKeplersLaws/Keplers_Laws_fullscreen_512kb.mp4
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Forget this guy? He uses his emotionalism as a substitute for knowledge. He thinks that his imagination is scientific fact
Nuh Nzinga! Heist comes across as mature guy unlike many cats around here who resort to name calling tactics when they're opposed.
Look at his responses in this thread. There's nothing disrespectful towards anyone. Just standing his ground. So, he is fine by me...
If I said it, your ignorant ass would argue about it. What you do not realise is the heat that we feel from the sun, is nothing more than the infrared part of the same spectrum of light we receive; The energy we receive from the sun covers a wide spectrum, from low frequency infrared, to the high frequency untraviolet. In between them is the bandwidth of light visible to our eyes, which covers a very small spectrum of the energy emitted by the sun..The light from the sun is radiant energy in that it covers a distance through open space. This is different from say, mechanical energy that is transmitted by mechanical coupling, electrical energy that is transmitted through an electrical conductor, kinetic energy that is conferred by the existence of motion, potential energy which is a relative quantity because it makes sense only when you can compare two objects that are in similar states but have different energies, etc...
The energy in a photon of light is called a quanta..from whence we get quantum mechanics..
Would you please stop talking!
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I normally don't do this...
But if your theory is true then explain where the ice during hay storm comes from?
Hint:
The sun is not above the earth!
Your question has no relevance to the discussion?
Ice during a hail storm is formed because water droplets in the atmosphere move through a sudden column of freezing air, crystalizing the precipitate at a rapid pace. Basically anytime you have moisture laden warm air (low pressure system) and a pocket fast moving cold air (high pressure system) slams into it, it's partially a recipe for hail. It's why hail usually precedes tornados or very bad thunderstorms.
What does any of that have to do with the sun position though?
Where did I say that the SUN was above the earth? Why do you believe the earth is FLAT?
Commercials airliners travel the circumference over the surface of the earth at a distance of 5-6 miles above the surface.
At any given point you're closer to the sun and it's radiant energy than you would be on the surface. Additionally at those altitudes there's very little to cloud cover so you're getting the sun's full intensity.
I am through talking to this ignoramus.
Same here...
You confuse even yourself. You just posted an article that proved my point and then reiterated my point, then told me I was wrong and should shut up.
Stop sniffing coke, Nzinga.
Like I said heat energy is RADIANT energy. Yes, on the infrared scale - but can you SEE infrared with your naked eye? NO! No one can see infrared unassisted without electronic means. You can see its effects, but you cannot see it anymore than you can see a radiowave or microwave.
The light energy we see from the sun is photonic. Photons are what stimulate the cones and rods in our eye.
Go away now. Go write your book on Africa. You have much more important things to than search Google for answers to commonly known items.
I am through talking to this ignoramus.
Thank you Dr. Blunt. Please go away now.
Your question has no relevance to the discussion?
Ice during a hail storm is formed because water droplets in the atmosphere move through a sudden column of freezing air, crystalizing the precipitate at a rapid pace. Basically anytime you have moisture laden warm air (low pressure system) and a pocket fast moving cold air (high pressure system) slams into it, it's partially a recipe for hail. It's why hail usually precedes tornados or very bad thunderstorms.
How do these water droplets in the atmosphere come from? Because given your stove theory above, they should be evaporating. Or am I on that stuff?
What does any of that have to do with the sun position though?
I said that the sun rays hit the earth at a certain angle and so there is no way that it can get hotter when you go up!!! Hand over the stove again!!!
Where did I say that the SUN was above the earth?
Here...
Why do you believe the earth is FLAT?
This is cheap....
Commercials airliners travel the circumference over the surface of the earth at a distance of 5-6 miles above the surface.
Circumference meaning it is circular. And so the distance cannot propagate between 5 and 6 miles? Come on now....
At any given point you're closer to the sun and it's radiant energy than you would be on the surface. Additionally at those altitudes there's very little to cloud cover so you're getting the sun's full intensity.
Assuming the sun is above the earth which is not the case and so what you're saying cannot happen!!!
...
I probably shouldn't get involved
but "Henry" is incorrect.I worked as a Paint Chemist for a long time..
I made paint and evaluated additives daily for years.
The facts are.. "most" paint starts off as a white base. The main ingredients being TiO2, some mixture of water, latex, propylene glycol (or solvent), and the various additives.
To make a colored paint you add additional colored pigment.. (For some colors the TiO2 is reduced so that there isn't much of a weight difference). These weights are not significant when you're talking one gallon..but per 100 gallons it could be 5-7 lbs heavier.
Why do I get the feeling that I'm talking to Nzinga as if you're one of his alter-egos on here, which is an off shoot of Blunt, who is known to have multiple personalities on here.
Anyway:
Water droplets form in the air because of heat. They don't evaporate into outerspace because water vapor doesn't permeate the atmosphere. Although gaseous, it's still too heavy to go orbital.
It's why you don't find clouds above 40,000ft typically.
Every molecule of water that was every formed on the Earth is still here on Earth short of what's been transported into space by man.
Again, you're confusing photonic energy with radiant. Although the angle that the infrared rays doesn't necessarily change along a give path, you are moving closer to it's source.
Ever been camping? Think about a camp fire. When you want to get warmer, you move closer to camp fire. When you get too warm, you back away from it.
The angle to which you're standing doesn't really make much a difference although what direction you're facing obviously affects what side of you is going to get the warmest quickest.
In it's most extreme sense, think about being just on the edge of out atmosphere and the beginning of space (Karman line ....62 miles above the earth).
Now the angle of he sun hasn't changed at all. Sun is still not above you. But the temperature delta is insane. If you're facing the sun, suddenly you're baking at over 300 degrees! Step into some shade and now you're down to -100 degree!
actually the higher you go actually the colder it is... try hiking up a mountain on a HOT day... (I climbed Mt Fuji in Japan and it was about 80 on the surface... and when I reached the summit I was wearing my damn sweater and a hat)... reason you see mountains in Cali that have snow on their peaks...
Ok then...
Dude no disrespect by why you telling me all this...?
This thread is hilarious.
Negro, planes fly in the troposphere, where temperature decreases with heat. So even though you're "closer to the sun" (not really), it's colder at the top of the troposphere than the surface of the planet.
You must be thinking about the Stratosphere or the Mesosphere.
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Yup. Up in the mountains the air temperature is colder (Less air/thin air), but the suns rays and intensity are stronger. It's cold because there's less air to heat and keep thermal ambient temperature warm. Infrared rays need to react with other molecules - excite them so they give off heat.
But if there was no wind. Absolutely calm day and you were standing in the sun on top of the mountain, with no wind to strip the heat off your body - you'd find that you were getting hot.
That's why the vacuum of space is -100 degrees but the minute you place an object in the the sun's rays it'll heat up to 200-300 degrees.
You're coming in halfway into a long thread.
We're talking about heating up aluminum along with a sealed body with sea level air.
We're not talking about heating ambient tropo, meso, or statospheric air.
All the above airs are significantly less dense and thus infrared has a lot less to excite or stimulate to give off heat.
I probably shouldn't get involved
I worked as a Paint Chemist for a long time..
I made paint and evaluated additives daily for years.
The facts are.. "most" paint starts off as a white base. The main ingredients being TiO2, some mixture of water, latex, propylene glycol (or solvent), and the various additives.
To make a colored paint you add additional colored pigment.. (For some colors the TiO2 is reduced so that there isn't much of a weight difference). These weights are not significant when you're talking one gallon..but per 100 gallons it could be 5-7 lbs heavier.
I did call and speak with him. You are right and wrong. TI02, apparently is a good base pigment and hider, whatever that means, and it provides bright whites. However commercial applications of most white require additional pigmentations that negate mass differences between most other pignments. Seldom are the whites we see pure whites; they are a shade of white. He alluded to chalking as one of the reasons why you do not really want to leave TO12 as the final pignment. Again, I am not a chemist so I have to take your questions back and forth. He was at work when I called, and I think he was surprised that I called him again to ask about such a thing. I got the distinct impression that he was getting irritated..If I am wrong, I will admit it. Really, this is not my area...
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You did not make any point; you were confused, pretending that there is such a thing called radiant energy that is different from "Photonic energy"... We are not saying the same thing but carry on...
Y'all ain't know...heist knows everything
Why are most cable boxes black? I am calling NAACP!
Absolutely no particular reason... Believe me, I worked for General Instruments many years ago, so I know that one..Cosmetically, black and white are the easiest colours to blend with the furniture already in a house. That, however, is a marketing, rather than an engineering decision.
He said the visible light is photonic energy, the heat we feel is radiant energy.
I probably shouldn't get involved
I worked as a Paint Chemist for a long time..
I made paint and evaluated additives daily for years.
The facts are.. "most" paint starts off as a white base. The main ingredients being TiO2, some mixture of water, latex, propylene glycol (or solvent), and the various additives.
To make a colored paint you add additional colored pigment.. (For some colors the TiO2 is reduced so that there isn't much of a weight difference). These weights are not significant when you're talking one gallon..but per 100 gallons it could be 5-7 lbs heavier.
Thank you. This is precisely what I've been saying. I've painted with House of Kolors and their pearls for instance, weigh more than flat or candied colors.
He said the visible light is photonic energy, the heat we feel is radiant energy.
We feel radiant energy or radiance. What is so hard for you to get about that?
Radiant energy can come from a number of sources (nuclear, conductive, chemical) including the electromagnetic spectrum (infrared, microwave). However, we CANNOT SEE infrared nor microwave - but we can feel the radiant energy when it excites atoms.
Our eyes see excited photons as light in certain spectrum. The photonic energy being given off or reflected is what our cones and rods pick up on and our brain's receptor interpret as light.
I really can't believe you with all your intelligence can't seem to get it through your head though ... You cannot FEEL a photon or all electormagnetic radiation. If you did, we'd all be in painful hell because photons are all around us and a smaller unit of everything.
The sun is radiating energy. Some of it is visible and invisible. The visible part we see - those are the photons. The invisible part we feel as radiant heat and that heat is generated by the waves exciting atoms and getting them to move around (an in some cases cause chemical reactions that release energy and created heat).
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i usually fuk with ur posts but this sounds crazy. isn't it colder the higher in altitude you get? if im on the ground, im further away from the sun than someone on the top of a mountain, but im willing to bet that that nicca will be wearing a jacket even if its t shirt weather where im at.
the most LOGICAL answer is that planes are white because in case of a water landing they want to make sure the plane floats rather than sinks. u know niggaz dont like the water and cant swim
yup, i seem to remember in my astronomy class that during winter the sun is actually closer to earth, but that the angle at which the suns energy hits the earth is less direct.
this gets 3 pages? that's what's hot on BGOL now?
I was about to write the same exact thing
all this pussy posted barely any replies.
Dude talk about airplane paint....and it's an in depth BGOL discussion.
Yup, we're closer to the sun distance wise (contrary to maps our orbit around the sun is not circular more oblong), but the northern hemisphere's pole is point away from the sun. That's why Northern Alaska gets almost 24 hours of darkness during the month of the winter solstice.