Inductance units: Heng (H), Milli Heng (mH), Micro Heng (μH) and Naheng (nH).

Their conversion relationship is:1h =1000 MH =106 μ h =109 NH.

Henry is a derivative unit of the International System of Inductance Units with the symbol H, which is named after American physicist joseph henry.

Extended data:

Founder of inductance unit: Henry.

Henry was born into a poor worker's family in Albany, new york. /kloc-dropped out of school at the age of 0/3 and later became an apprentice in a watch shop.

He studied hard, was admitted to Albany College, studied chemistry, anatomy and physiology, and prepared to be a doctor. However, after graduation, he became a lecturer in natural science and mathematics at Albany College.

1832, Henry became a professor of natural philosophy at New Jersey College (now Princeton University) until 1846.

1846- 1878, secretary and first director of the newly established Smithsonian Institution, is in charge of meteorological research.

From 1867, he served as president of the American Academy of Sciences until 1878 died in Washington.

Henry's main achievement in physics is his original research on electromagnetism.

Baidu Encyclopedia-Henry