generate questions: The assumption that black-body radiation is thermal leads to an accurate prediction: the total amount of emitted energy goes up with the temperature according to a definite rule, the Stefan–Boltzmann law (1879–84). But it was also known that the colour of the light given off by a hot object changes with the temperature, so that "white hot" is hotter than "red hot". Nevertheless, Wilhelm Wien discovered the mathematical relationship between the peaks of the curves at different temperatures, by using the principle of adiabatic invariance. At each different temperature, the curve is moved over by Wien's displacement law (1893). Wien also proposed an approximation for the spectrum of the object, which was correct at high frequencies (short wavelength) but not at low frequencies (long wavelength). It still was not clear why the spectrum of a hot object had the form that it has (see diagram).
What do scientists assume black body radiation is? {sep_token} What kind of prediction does the assumption that black body radiation is thermal lead to? {sep_token} What type of changes in the light a hot object emits as the object's temperature changes? {sep_token} What law describes the changes in light emitted by a hot object? {sep_token} What assumption that black-body radiation is what leads to an accurate prediction? {sep_token} What does the Stefan-Boltzmann law state? {sep_token} What about a hot object changes with the temperature? {sep_token} What color is hotter than "red hot"? {sep_token} What did Wilhelm Wien discover? {sep_token} What rule predicts that emitted energy increases with temperature? {sep_token} What characteristic of the light emitted by a hot object changes with temperature? {sep_token} Who discovered the mathematical relationship between peaks and curves of light at different temperatures? {sep_token} The rule that adjust the curve at different temperatures is known as what? {sep_token} Wien's spectrum model could not predict accurate at what end of the spectrum? {sep_token}