Planck constant

High school (ages 12+)
Science & Technology

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Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/planck-constant

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. Who discovered Planck constant?1900
2. What is the discoverer?Max Planck
3. What is the fundamental constant?Yes, a cornerstone of quantum mechanics
4. What is Planck's constant and why is it important?Planck's constant, written as 'h', is a tiny number that shows how energy comes in little packets called quanta. It helps scientists understand how very small things like atoms behave.
5. How did Max Planck discover the idea of energy quanta?In 1900, Planck was studying black‑body radiation and found that the old rules didn't match experiments. He guessed that energy could only be released in small, fixed amounts, and he used the constant 'h' to link those amounts to light frequency.

Quantum Mechanics: The fundamental theory in physics describing nature at the smallest scales of energy and matter.
Photon: A quantum of the electromagnetic field, the fundamental particle of light and all other forms of electromagnetic radiation.
Quantization: The principle that physical quantities are restricted to discrete values, rather than continuous ranges.
Black-Body Radiation: Electromagnetic radiation emitted by a body due to its temperature, which Planck's constant helped to accurately model.