Word.ws English Dictionary

Arago spot

Arago spot noun: a bright point that appears at the centre of a circular object's shadow due to Fresnel diffraction.

Noun

Arago spot (plural Arago spots)

  1. A bright point that appears at the centre of a circular object's shadow due to Fresnel diffraction.
    • The Arago spot played an important role in the discovery of the wave nature of light and is a common way to demonstrate that light behaves as a wave.

Synonyms of Arago spot

Forms of Arago spot

pluralArago spots

Origin of Arago spot

Named after Dominique-François-Jean Arago, who performed an experiment demonstrating the spot's existence.

Questions about Arago spot

What does Arago spot mean?
Arago spot means a bright point that appears at the centre of a circular object's shadow due to Fresnel diffraction.
What part of speech is Arago spot?
Arago spot is a noun.
What is the plural of Arago spot?
The plural of Arago spot is Arago spots.

Words near Arago spot in the dictionary

  1. Aragatsotn
  2. arage
  3. araged
  4. aragh
  5. Arago
  6. Arago spot
  7. Arago spots
  8. Aragon
  9. Aragon Strip
  10. Aragones
  11. Aragonese

Source and license

Adapted from Wiktionary: Arago spot (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “Arago spot.” Word.ws, https://word.ws/arago_spot. Based on Wiktionary, CC BY-SA 4.0.