What is an example of converting nuclear energy to radiant energy?

Answer 1

The sun gets its energy by nuclear fusion, and this creates a very hot outer layer. In fact the sun appears to us as a black body would when heated to about 6000 degC. You may be puzzled by reference to a 'black body'. This is a concept that physicists use to explain the emissivity and the absorption of electromagnetic radiation, a 'black' body simply is the most efficient in both these respects. The sun obviously doesn't look black to us, but if you heated an ideal black body to 6000degC in the lab, its emitted spectrum would be the same as the sun emits. this includes infra-red and ultra-violet energy as well as visible energy which we call light. It is visible to us because the human eye has evolved to use these frequencies, which cover the range from violet to red.

Answer 2

Check DNB (departure from nucleate boiling) and there is an association to radiant energy given off. Simply, as the water boils off of the fuel and the rod continues to heat the transfer of heat will become radiant. Note: DNBR is the DNB Ratio.

Since your question does not ask the safety considerations, I will leave that discussion for another time. Suffice to say that nucleate boiling is good and excess heat that does not make NB possible is not good for the life of the fuel/fuel rod.

Answer 3

A nuclear reactor such as a Pressurised Water Reactor