Chapter 28, Problem 47A

To determine

If we can heat a piece of metal until it glows blue-hot red-hot and then to white-hot and the reason behind this fact is to be explained.

Explanation of Solution

Introduction:

When the metal is heated, the emitted photon falls into the wavelength of the visible light spectrum.

Yes, metal can glow blue-hot when the temperature of the metal is increased. When the temperature is increased, then the energy of the emitted photons is also increased. Increasing the energy decreases the wavelength of light. So, the emitted photons may fall in the wavelength of blue color of the visible light spectrum.

Conclusion:

Yes, metal can glow blue-hot.