Wien's displacement law

High school (ages 12+)
Science & Technology

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Date:

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/wien-s-displacement-law

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. What is the discoverer?Wilhelm Wien (1893)
2. What does Wien's Displacement Law say about hot objects and light colors?It says that the hotter an object is, the shorter the wavelength of the light it gives off, so hot things glow more blue or white, while cooler things glow more red.
3. How can we use Wien's Law to find the temperature of a star?By looking at the color of the star's light, we can tell its temperature because the peak wavelength moves to blue for hot stars and to red for cool stars.

Black-body radiation: The electromagnetic radiation emitted by an idealized object that absorbs all incident radiation and emits radiation based solely on its temperature.
Spectral radiance: The power radiated per unit wavelength, per unit solid angle, per unit projected area of a source.
Absolute zero: The theoretical lowest possible temperature, at which particles have minimal motion (0 Kelvin or -273.15 degrees Celsius).