h

1. the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
2. a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second
3. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
4. the 8th letter of the Roman alphabet
5. a period of time equal to 1/24th of a day; "the job will take more than an hour"
6. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure; "enthalpy is the amount of energy in a system capable of doing mechanical work"

Synonyymit

Käännökset

• engl.hydrogen
• ruotsiväte
• saksaWasserstoff
• ranskahydrogène
• venäjäводород
• virovesinik

Hierarkia