インテルのインスタグラム(intel) - 3月4日 07時26分

A nanosecond is one billionth of a second - a long time compared to the femtosecond, the attosecond and the shortest possible unit of time - known as Planck time. #sciencesnap #didyouknow #clock #numbers

[BIHAKUEN]UVシールド(UVShield)

>> 飲む日焼け止め！「UVシールド」を購入する