0
What else can I help you with?
Why is Ice a black body?
It's not. The term "black body" is used to describe a hypothetical perfectly black object that reflects no light at all .here the light refers to entire electromagnetic spectrum. Although the emissivity of ice is near about 0.95 hence it behaves more as black body (emmisivity = 1) than a white body. The reason is for ice to be near about black body is that ice is a very good absorber of radiation outside the visible region (eg for infrared rays ) . Hence ice is more a black body than a white body (as in appearance ).
Who emits more radiation a white body or a black body?
A black body emits more radiation than a white body. A black body absorbs all radiation that falls on it and re-emits it as thermal radiation, making it an ideal emitter. On the other hand, a white body reflects most radiation and thus emits less overall.
What is light bulb filament?
A light bulb filament is a thin wire, typically made of tungsten, that is heated by an electrical current to produce light. As the filament heats up, it glows and produces light, making it a critical component in an incandescent light bulb.
Is the tungesten filament a good conductor?
Tungsten is a good conductor of electricity. If it was a poor conductor and highly resistive then electricity would never pass through it as a filament inside a light bulb, therefore, it would never glow.
What metal is a light bulb filament made of?
A light bulb filament is typically made of tungsten metal. Tungsten is chosen for its high melting point and good electrical conductivity, making it ideal for producing light through resistive heating when an electric current passes through it.
What will happen if a rigid body fall into black hole?
Any body falling into a black hole will get completely destroyed. There is no such thing as an absolutely rigid body; a "rigid body" is an approximation that may help with some calculations, and such an approximation is valid (i.e., it's a good approximation) under certain circumstances, but a body will certainly not remain rigid under the extreme circumstances of a black hole.
Is black blood good for a human body?
no
Why are refrigerator compressors painted black?
It's because of radiation that as you know black body is an ideal radiation body for good radiation and so good heat transfer.
Is 22 over 7 a good approximation of pi?
yes
10 miles is about how many km?
16 km is a good approximation.
Where can one find a good wax for a black Escalade?
One can find a good wax for a black Escalade by consulting the reps at the auto shop and the body shop. A good idea is to try Black Ice Wax. It sells for $150.
Is there exists any perfect black bodies in the universe?
There are no perfect black bodies on the universe. But there are a lot of them which can be approximated (with good precision) by the black body description.
Why the filament in a bulb lights up?
because filaments are generally good conductors of heat , so the filament burns first and then gets heated up and then gives light.
Sometimes you need to some points to get a good approximation of the location of extreme value?
plot
What is a good approximation for the number that you must multiply the diameter by to get the circumference of a circle?
3 or 3.142
Why is theta a good approximation for sine theta if theta is near zero?
near zero
What two properties of the metal tungsten that make it good material for the filament?
Magnesium and Titanium.
