What does H stand for? In fact, the English letter H is a common record symbol in international standard time and quality units. H is the abbreviation of hour, and hour is the unit of time. The hour is not the basic unit of the international system of time units (the basic unit of the international system of time units is seconds), but an auxiliary unit of time coordinated with the basic unit of the international system of units.

The origin of the letter h

About 1000 BC, in Biblus and other parts of Phoenicia and in the center of Canaan, the symbol H was a specific linear form.

The Greeks renamed the symbol eta and used it in two ways-as a consonant H and a long vowel E. The Romans kept the form of H and the pronunciation standard of English H. It has been applied from Latin to English and has not changed.

Greek lowercase eta is developed from the curve of adding capital letters. By the 9th century, this Latin character was basically formed, much like English handwriting and lowercase printing.