Context: 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).

Question: What assumption that black-body radiation is what leads to an accurate prediction?
Answer: thermal

Question: What does the Stefan-Boltzmann law state?
Answer: the total amount of emitted energy goes up with the temperature according to a definite rule

Question: What about a hot object changes with the temperature?
Answer: the colour of the light

Question: What color is hotter than "red hot"?
Answer: white hot

Question: What did Wilhelm Wien discover?
Answer: the mathematical relationship between the peaks of the curves at different temperatures

Question: What rule predicts that emitted energy increases with temperature?
Answer: the Stefan–Boltzmann law

Question: What characteristic of the light emitted by a hot object changes with temperature?
Answer: the colour of the light given off

Question: Who discovered the mathematical relationship between peaks and curves of light at different temperatures?
Answer: Wilhelm Wien

Question: The rule that adjust the curve at different temperatures is known as what?
Answer: Wien's displacement law

Question: Wien's spectrum model could not predict accurate at what end of the spectrum?
Answer: at low frequencies (long wavelength)

Question: What do scientists assume black body radiation is never made from?
Answer: Unanswerable

Question: What law describes the changes in light emitted by a frozen object?
Answer: Unanswerable

Question: What about a frozen object changes with the temperature?
Answer: Unanswerable

Question: What rule predicts that emitted energy decreases with temperature?
Answer: Unanswerable

Question: What law adjusts the curve at the same temperatures?
Answer: Unanswerable