Atomic spectrum question?

Question

if a body is heated to a very high temperature and becomes self luminous, the apparent color of the radiation shifts from red to yellow to blue as the temperature increases. why is this so?

Answer 1

The expiration of isotopes

Answer 2

Everything is at a higher energy level, making more energy available for photons.  The frequency of the photon is proportional to its energy.  In the case of electrons at higher energy orbits, the higher the orbit (higher energy), the more energy available to emit as a photon when the electron drops to its base orbit.

Answer 3

According to the energy equation: E=h*f---

f-->frequency.....h-->Planck's constant.

As we heat the body the temperature increases and as a result overall energy of the body increases. The radiation emitted from this body would depend upon the energy of the body and hence the frequency of the radiation (Acc. to the above eqn.,) will be proportional to the temperature. So as the temperature increases the frequency of radiation increases. Hence the apparent color of the radiation shifts from red(low freq) to yellow to blue(high freq) as the temperature increases.