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分散関係

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Wikipedia definition

1. Dispersion relationIn physics and electrical engineering, dispersion most often refers to frequency-dependent effects in wave propagation. Note, however, that there are several other uses of the word "dispersion" in the physical sciences. In the presence of dispersion, wave velocity is no longer uniquely defined, giving rise to the distinction of phase velocity and group velocity.
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0.13958053142379412

4 strokes. Jōyō kanji, taught in grade 2.

分

part, minute of time, segment, share, degree, one's lot, duty, understand, know, rate, 1%, chances, shaku/100

Kun: わ.ける、わ.け、わ.かれる、わ.かる、わ.かつ

On: ブン、フン、ブ

4.408418450801498

12 strokes. JLPT N3. Jōyō kanji, taught in grade 4.

散

scatter, disperse, spend, squander

Kun: ち.る、ち.らす、 -ち.らす、ち.らかす、ち.らかる、ち.らばる、ばら、ばら.ける

On: サン

0.4071098833193995

14 strokes. JLPT N3. Jōyō kanji, taught in grade 4.

関

connection, barrier, gateway, involve, concerning

Kun: せき、 -ぜき、かか.わる、からくり、かんぬき

On: カン

1.0119588528225074

9 strokes. JLPT N3. Jōyō kanji, taught in grade 3.

係

person in charge, connection, duty, concern oneself

Kun: かか.る、かかり、 -がかり、かか.わる

On: ケイ

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