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Word of the Month 2012

Don’t feel like reading a book cover to cover? Then Don’t! Simply browse our range of encyclopaedias, lots of information without all the reading!

All of our Word of the Month fact sheets are taken from our collection of encyclopaedias.

Word of the Month June 2012

Friedrich Wilhelm Bessel (1784-1846)

“German astronomer and mathematician. He was the first astronomer to use a technique called Parallax to measure how distant a star is from the Earth using the apparent motion of the star relative to the Earth as the Earth moves in its orbit…He devised Bessel functions, a type of mathematical function used to describe the observed perturbations of the planets and stars”.

Philip’s Science and Technology Encyclopedia, 1999

Word of the Month May 2012

Dew Point

“Temperature to which air must be cooled for water vapour to begin to condense”.

Philip’s Science and Technology Encyclopedia, 1999

Word of the Month April 2012

Yoke

“A component of high magnetic permeability used to complete a magnetic circuit”.

The New Penguin Dictionary of Science, M.J. Clugston, 1998

Word of the Month March 2012

Feldspar

“Important group of common rock-forming minerals that all contain aluminium, silicon and oxygen, but with varying proportions of potasium, sodium and calcium. They are essential constituents of Igneous rock”.

Philip’s Science and Technology Encyclopedia, 1999

Word of the Month February 2012

Glottis

“The part of the larynx (voice-box) that consists of the vocal cords and the slit-like opening between them”.

Dorling Kindersley A-Z of Family Health, 2005

Word of the Month January 2012

Airglow

“Faint permanent glow of the Earth's Ionosphere resulting from the recombination of molecules, such as oxygen and nitrogen, that have been ionized by ultraviolet radiation from the Sun and probably by cosmic-ray and solar-wind particles”.

Philip’s Science and Technology Encyclopedia, 1999