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How lasers start from chaos

Written by Academy of Finland

Lasers that emit ultrashort pulses of light are critical components of technologies, such as communications and industrial processing, and have been central to fundamental Nobel Prize-winning research in physics.

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CO2 in Crisis!

Written by Anthony Bright-Paul

Really, you’ve got to laugh! Every sceptic scientist in the world must surely be crying their eyes out with laughter. Why? There are headlines in all the papers – we are running short of CO2. Supermarkets have not enough fizzy drinks in this heat wave, beer is in danger, and worse there is trouble with crumpet.

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Wind Power: Is the Fuselage Turbine a Better Design?

Written by Robert A. Beatty BE (Minerals) FAusIMM(CP)

A fresh look at wind turbine design. Betz’ Law implies that if a device could be added to a wind turbine which lowers back pressure, the wind mill would be able to extract more than 59{154653b9ea5f83bbbf00f55de12e21cba2da5b4b158a426ee0e27ae0c1b44117} of the available wind power.

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How It Works

Written by Herb Rose

Radioactivity is where atoms with unstable nuclei emit particles forming more stable atoms.  An atom can emit neutron molecules and helium nuclei, or by dividing or emitting an electron, they can form more stable atoms of different elements.

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Gerald Marsh, A Theory of Ice Ages

Written by PSI Staff

Gerald Marsh, retired Argonne National Laboratories Physicist, challenges the usual assumption that ice age cycles are initiated by Milankovich Cycles and driven by the Arrhenius effect of carbon dioxide.

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