herschel
- n English astronomer (son of William Herschel) who extended the catalogue of stars to the southern hemisphere and did pioneering work in photography (1792-1871)
- n English astronomer (born in Germany) who discovered infrared light and who catalogued the stars and discovered the planet Uranus (1738-1822)
herschelian telescope
- n a reflecting telescope with the mirror slightly tilted to throw the image to the side where it can be viewed
hershey
- n United States confectioner and philanthropist who created the model industrial town of Hershey, Pennsylvania; founded an industrial school for orphan boys (1857-1945)
- n an industrial town to the east of Harrisburg
hertha
- n the Teutonic goddess of fertility; later identified with Norse Njord
hertz
- n the unit of frequency; one hertz has a periodic interval of one second
- n German physicist who was the first to produce electromagnetic waves artificially (1857-1894)
- n German physicist who with James Franck proved the existence of the stationary energy states postulated by Bohr (1887-1975)
hertzian wave
- n an electromagnetic wave generated by oscillations in an electric circuit
herzberg
- n Canadian physicist (born in Germany) noted for contributions to understanding the structure of molecules (born in 1904)
heshvan
- n the second month of the civil year; the eighth month of the ecclesiastical year in the Jewish calendar (in October and November)
hesiod
- n Greek poet whose existing works describe rural life and the genealogies of the gods and the beginning of the world (eighth century BC)
hesitance
- n a feeling of diffidence and indecision about doing something
hesitancy
- n a feeling of diffidence and indecision about doing something
- n a certain degree of unwillingness
his hesitancy revealed his basic indisposition
hesitation
- n indecision in speech or action
- n a certain degree of unwillingness
after some hesitation he agreed - n the act of pausing uncertainly
there was a hesitation in his speech