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反応断面積

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Wikipedia definition

1. Cross section (physics)A cross section is the effective area which governs the probability of some scattering or absorption event. Together with particle density and path length, it can be used to predict the total scattering probability via the Beer-Lambert law. In nuclear and particle physics, the concept of a cross section is used to express the likelihood of interaction between particles.
Read “Cross section (physics)” on English Wikipedia
Read “反応断面積” on Japanese Wikipedia
Read “Cross section (physics)” on DBpedia

0.8331212969357712

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

反

anti-

Kun: そ.る、そ.らす、かえ.す、かえ.る、 -かえ.る

On: ハン、ホン、タン、ホ

1.933771945767148

7 strokes. JLPT N1. Jōyō kanji, taught in grade 5.

応

apply, answer, yes, OK, reply, accept

Kun: あた.る、まさに、こた.える

On: オウ、ヨウ、 -ノウ

2.457198938606376

11 strokes. JLPT N3. Jōyō kanji, taught in grade 5.

断

severance, decline, refuse, apologize, warn, dismiss, prohibit, decision, judgement, cutting

Kun: た.つ、ことわ.る、さだ.める

On: ダン

0.8113118389008034

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

面

mask, face, features, surface

Kun: おも、おもて、つら

On: メン、ベン

3.1463778125113593

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

積

volume, product (x*y), acreage, contents, pile up, stack, load, amass

Kun: つ.む、 -づ.み、つ.もる、つ.もり

On: セキ

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