There are two sides: one shiney, one not.  Wouldn't shinier side facing the food reflect and retain heat better?
204016
There might be some very slight difference in the albedo between the 'shiny' and 'dull' sides of the foil, but there's probably more variation in your oven temperature than there would be a difference between which side of the foil you use.\n\nThe shiny side is created when the roll of aluminum foil is spun off the rollers in the packaging plant, and the side against the roller gets burnished as it reels out.  Both sides are very nearly equal in their heat reflection abilities, and so you can use either side without fear that the other side may have 'worked better'.
106044
the heat of the meat is proportional to the angle of the dangle
140072
Ha!  I know just what you mean.  Basically a reflective surface reflects everything and most everything is visible depending on your position in relation to the object.  For example, an object held behind your back can be seen by a person standing in front of you if they change their position slightly.  It is a fascinating and wonderful phenomenon.
160273
Ans. C.\n\nThey are having different frequencies.\n\nThey move with same velocity.\n\nThey have same type of polarization.\n\nOrange has a longer wavelength than yellow.
405347
You must to review the diagram... note that the light escape in a second reflection, no in the first reflection.
425717
if u can trap light in a totally reflective mirror(means which reflect light 100%) and don't make any HOLE in ball it definitely keep on reflecting.\nif mirror is not 100% reflecting it will absorb some portion of light every time light fell on its surface.So after some time light rays will vanish practically.(theoretically light rays will vanish after infinite time)\n \nif yr mirror ball has a hole then there is a probability that light will come out of mirror ball in its journey.\npractically this situation is not possible bcos either second or third situation always applies.
73901
Because most starts will be at different locations and therefore you see light coming from different directions. However, if they are close enough then the two will get superimposed.
26307
Its made that way as an anti-glare feature.\n\nThere's a full mirror behind a partial mirror.  The two mirrors are a few degrees apart either can be used.  The dimmer one is for night driving to cut glare from headlights.
23098
A mirror preserves absolute direction, both horizontally and vertically.  Say you're facing west; the reflection of your north hand is on the same side of the room as your real north hand -- namely the north side.  And the reflection of the top of your body is toward the ceiling, just like the real top of your body.  That's because north vs. south and up vs. down are the same for everybody.  But right and left are not absolute directions.  Your north hand is on the right because you're facing west.  If someone were facing east, their north hand would be on the left.  And your reflection in this example _is_ facing east because you are facing west, and the reflection is looking back at you.  So, your reflection's north hand, which is the same as your north (that is, right) hand, is its left hand.
380280
the tastes and colors do  not discuss themselves\nlol\nbasically they do not agree with each other its like\npurple ketchup\n\nit dont make sense lol
24213
A\nB would be for a polished surface,\nC and D are never true (although on a macroscopic scale it can appear that they are).
119597
That's because light reflects in the mirror just as if it's coming from the same distance the real object is but behind the mirror.  You are nor looking an image that is at the mirror distance, but really at the real object distance.
64003
Food can be heated at least four different ways in an "oven" and some use more than one way.  The oven may be named for the principle method of heating because of any advantages.\n\nMicrowave ovens use microwaves to agitate the electrons of molecules in the food, especially water.  Conduction is the direct flow of heat from one body to another by contact.  Although an oven may not heat food directly by conduction, the food container (bake pan?) may heat up first then conduct heat into the food.  Food may also be heated in an oven by convection.  Hot gas rises and cool gas falls due to differences in density when the hot gas expands and the gases circulate through the oven by natural or forced convection (perhaps using a fan).  Lastly food may be heated in an oven by radiation of heat similar to the warmth you feel when holding your hand up towards the sun.  Radiation heating occurs because the electrons in the metal oof the heating elements are raised to higher orbits and when they return to rest positions they re-emit the energy (supplied by electricity passing through resistance) as infrared radiation which is electromegnatic like light but of much longer wavelengths.  Food is broiled by close exposure to the hot heating element.\n\nRadiation heating may also be produced using banks of specialy light bulbs (which may grow red) that emit infrared radiation.  When the radiation strikes the object to be heated (paint, etc.) it enters the molecules and agitates the electrons of the materrial increasing vibrations heats the material.\n\nSome colors are more easily heated by infrared radiation than others.  At the extremes, black absorbs almost all radiation and heats up while pure white reflects most radiation and stays cool.  That is why you may stay "cool" in the summer heat wearing light or white clothes (like the desert dwellers).
160040
when you stand in the sun and get warm, it is because your skin absorbs the electromagnetic radiation we call light.  light is both a wave and a particle - called a photon.  photons have no mass, but they do carry energy.  when the photon is absorbed by your skin, the light energy is converted into (mostly) heat energy.\n\nanyway, it should'nt make a difference whether you are moving or not.  strictly speaking there are a few effects to consider but i would think they are very small.  for example:\n\n - the further you are from a light source, the dimmer it appears, and therefore the less light you absorb.  so if you are running away from the sun and you have a fixed effective area, then on average you will receive less solar flux than if you are just standing there.  however this is a tiny amount in terms of moving around on the surface of the earth.\n\n- conceivably if you are moving away from the sun, there will also be an effective doppler shift of the light, which will (slightly) shift the solar spectrum into the red.  since redder light has a lower energy, you should effectively absorb less energy, but the absorption spectrum of the skin should be considered.  also unless you are the flash, this effect will also be tiny because humans run so slow.\n\nthe energy that you DO absorb gets carried away from your body by several mechanisms:\n\n - radiation:  you (and all things) radiate light energy in the infrared.  this is called "blackbody radiation" and is a function of your temperature.  (blackbody radiation is why hot things glow orange, for instance.)\n\n - evaporation:  your skin sweats, and the sweat evaporates.  this evaporation requires some heat, which effectively cools down your skin.\n\n - conduction:  if you are standing perfectly still in air that is not moving, your body will warm up a layer of air molecules around your skin.  this warm air will rise, and cooler air will move in to replace it.  this is actually probably why it *feels* like you're cooler if you're running around: more wind = more cool air = more heat loss.
3036
It's because of the minor imperfections in the placement of the mirrors. Also, because the effect can't be seen without seeing it at an angle, it causes a curve based on your viewpoint.
184938
It depends on the wavelength of the light and its energy.
17758
I hope you don't take this to be something of a cop-out answer. Light is itself an electromagnetic field that is carrying energy through space -- commonly called an electromagnetic wave or 'light'. It is this wave that really makes things visible.\n\nConversely, if you have no electromagnetic wave or one of an invisible wavelength, (at least to the human eye) then it won't bounce off of the object or if it does it won't be visible when it reaches you.\n\nThe visible properties of an object are determined by how EM waves interact with the electrons near the surface of an object. These interactions are what make shiny things shiny (for instance).