Context: Prior to Planck's work, it had been assumed that the energy of a body could take on any value whatsoever – that it was a continuous variable. The Rayleigh–Jeans law makes close predictions for a narrow range of values at one limit of temperatures, but the results diverge more and more strongly as temperatures increase. To make Planck's law, which correctly predicts blackbody emissions, it was necessary to multiply the classical expression by a complex factor that involves h in both the numerator and the denominator. The influence of h in this complex factor would not disappear if it were set to zero or to any other value. Making an equation out of Planck's law that would reproduce the Rayleigh–Jeans law could not be done by changing the values of h, of the Boltzmann constant, or of any other constant or variable in the equation. In this case the picture given by classical physics is not duplicated by a range of results in the quantum picture.

Question: Before Planck, it was assumed that the energy of a body could take on what value?
Answer: any

Question: The Rayleigh-Jeans law makes close predictions for what amount of values?
Answer: a narrow range

Question: What does Planck's law correctly predict?
Answer: blackbody emissions

Question: In making Planck's law, what was in both the numerator and denominator of the formula that was used?
Answer: h

Question: Planck's work disproved what assumption?
Answer: that the energy of a body could take on any value whatsoever

Question: What rule predicted narrow range of energy values at lower temperatures?
Answer: The Rayleigh–Jeans

Question: Planck's law involved what necessary mathematical step to correctly predict blackbody emission?
Answer: multiply the classical expression by a complex factor that involves h in both the numerator and the denominator

Question: Changing values of n, the Boltzmann constant, or other variables resulted in learning what about Planck's law?
Answer: Making an equation out of Planck's law that would reproduce the Rayleigh–Jeans law could not be done

Question: The disparity between Planck's law and the Rayleigh-Jeans law led to what conclusion?
Answer: the picture given by classical physics is not duplicated by a range of results in the quantum picture

Question: What was assumed that the energy of a body could never take on before Planck?
Answer: Unanswerable

Question: What does the Rayleigh-Jeans law avoid predictions for in terms of values?
Answer: Unanswerable

Question: What does Planck's law incorrectly predict?
Answer: Unanswerable

Question: What in making Planck's law was in neither the numerator and denominator of the formula that was used?
Answer: Unanswerable

Question: What assumption was confirmed based on Planck's work?
Answer: Unanswerable