If Something is really hot it will glow? True or false?

Answer 1

True. As objects become hotter they begin to radiate visible light (glow). In fact, it goes the other way too. The brighter an object is, the hotter it is. The temperature of stars is determined by how bright they are.

Hope this helps!

Answer 2

Yes.
And from the colour, you can tell the temperature.

The light we get from the Sun is purely from the heated surface. The surface, by itself, does not generate light. Just like the stove element, by itself, does not generate light. It is the heat that causes it toglow red.

The energy from the fusion at the centre of the Sun is transported to the surface by convection cells (not by photons of light). The heatraises the surface temperature to 5770 K (9900 F) which causes it to appear yellowish white (pure white would be around 6000 K = 10,300 F).

An incadescent light bulb (an ordinary light bulb) glows because the filament is heated to 2800 K (4600 F) by the electrical current. That is why light bulbs are very hot.

A fluorescent tube glows for a different reason (ionization of a low-pressure gas: no heat directly involved).


There is a scale of color of the glow associated to temperature at the link below.

Answer 3

True.
A red hot iron glows red because it is hot. An incandescent light bulb filament glows white hot because it is even hotter that the red hot iron.

Answer 4

It depends what the material is made of. Metals tend to glow when heated to extreme temperatures. Most other things just catch fire and burn or just melt without changing colors.

Answer 5

True. Use the spectrum to guage the temperature. Red hot isn't near as hot as white hot or blue hot.

Answer 6

False. Things have to be at room temperature to glow.

Answer 7

not everything that is hot glows...hot air doesn't glow!

Answer 8

If someone post the same question twice they will get more answers.true or false?

Answer 9

In most cases yes

Answer 10

True.


Doug