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Buoyancy
01
浮力, 軽さ
the property of something weightless and insubstantial
02
楽観, 自信
a feeling of hopefulness and confidence that makes one remain cheerful, especially in sad or unpleasant situations
03
浮力, アルキメデスの原理
the tendency of an object to float or rise in a fluid, like water or air, due to the upward force exerted by the fluid
Example
Life jackets rely on buoyancy to keep people safe in water.
ライフジャケットは、水中で人々を安全に保つために浮力に頼っています。
Hot air balloons use buoyancy to lift into the sky.
熱気球は浮力を利用して空に浮かびます。
04
陽気, 楽しさ
cheerfulness that bubbles to the surface
