Question

black - body radiation could not be explained, predicted, or understood using maxwells theory of electromagnetic radiation. put in everyday terms, physicists in the late 1800s could not explain why molten iron glows red when heated to about 550 °c and glows white when heated to about 1200 °c. question 5.1.4 which of the following statements about a black body or black - body radiation are true? select all that apply idealized substance which does not exist not relevant to any real substance red hot is hotter than white hot emitted wavelength intensity distribution depends on temperature light is a wave and a particle the breakthrough came in 1900 through the work of the german physicist, max planck (1858 - 1947) whose theoretical treatment of the black - body radiation was fully consistent with all experimental measurements, and his mathematical result came to be known as the planck black - body radiation law. central to the explanation was the assumption that electromagnetic energy, e, can be emitted only in discrete packets - most definitely, a particle like property. the minimum energy would be one packet, called a photon, with an energy given by

Explanation:

A black - body is an idealized substance. In reality, no perfect black - body exists. The intensity distribution of the emitted wavelengths of a black - body radiation depends on its temperature. White - hot is hotter than red - hot. Black - body radiation concepts are relevant to real substances as real substances can be approximated as black - bodies in some cases.

Answer:

Idealized substance which does not exist, Emitted wavelength intensity distribution depends on temperature