Hu

Hubble, Edwin
American astronomer who profoundly changed understanding of the universe by confirming the existence of galaxies other than our own, the Milky Way.
Huffman Coding
For a given character distribution, by assigning short codes to frequently occurring characters and longer codes to infrequently occurring characters, Huffman's minimum redundancy encoding minimizes the average number of bytes required to represent the characters in a text.
Human Biology
Lists all Human Biology topics in the Encyclopaedia
Human Biology Books
Lists all Human Biology Books in the Encyclopaedia
Human Biology Calculations
Lists all Human Biology Calculations in the Encyclopaedia
Human Biology Conversions
Lists all Human Biology Conversions in the Encyclopaedia
Human Biology Weblinks
Lists all Human Biology Weblinks in the Encyclopaedia
Human Machine Interface
The interface between man and machine.
Human Skeleton
Serves as a scaffold which supports organs, anchors muscles, and protects organs such as the brain, lungs and heart.
Human Vibration
The effect of mechanical vibration in the environment on the human body.
Humectant
A substance that absorbs or retains moisture, added to a product to keep it from drying out.
Humidex
Abbreviation of Humidity Index.
Humidity
Measure of the amount of water present in the air at any given time.
Humidity at Saturation
The mass per unit volume of water vapour required to saturate the air.
Humidity Index
A number which combines the air temperature in Celsius and the amount of humidity in order to give a single number to represent the perceived discomfort of weather that is hot and humid.
Hundredweight
Abbreviated as cwt, this is an imperial unit of mass.
Hunds Rule
When electrons are put into orbitals having the same energy, degenerate orbitals, one electron is put into each orbital before putting a second electron into an orbital.
Hunting
Erratic variation of rotational speed.
Huygens′ Principle
"Every point of a wave front may be considered the source of secondary wavelets that spread out in all directions with a speed equal to the speed of propagation of the wave".