"H" is most commonly used in mathematics to represent the height of a figure in a geometric figure. The unit of time is also indicated in the calculation problem, and one hour is1h.

Common expressions:

1. In chemistry, a chemical symbol representing elemental hydrogen, or 1 hydrogen atom, or a substance composed of atoms.

2. In mathematical geometry, lowercase h stands for height.

3. In Hubble's law, h stands for Hubble constant.

4. In quantum physics, it means "Hamiltonian", and lowercase h stands for Planck constant. (its value is about 6.626196×10-34j s)

5. In the international system of units, what is Henry's inductance unit? .

6, in the drug approval with font size said chemicals.

Extended data

Mathematical symbols:

1, c: number of combinations.

2. Q: Rational number set.

3, n: natural number set, a non-negative integer set (including the element "0").

4.p: prime number (prime number) set.

5, r: set of real numbers.

6, z: integer set.

7. Sine: Sine of trigonometric function.

8.lim: restrictions.

9.wff: A combination formula.

10, iff: If and only if.

1 1: p (a):: the power set of set a.

12, u: union of sets.

Baidu Encyclopedia: Mathematical Symbols