noun
physics and chemistry
Refers to the combined fields of physics and chemistry, often used in institutional names or academic contexts.
理化学研究所は日本の有名な研究機関です。
RIKEN is a famous research institute in Japan.
彼は理化学の分野で博士
He earned a doctorate in the field of physics and chemistry.
化学 refers specifically to chemistry, while 理化学 covers both physics and chemistry.
Compound of 理 (physics) and 化学 (chemistry).