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...energy from the wind to the water through wind stress. Wind stress has the Greek symbol τ (tau) and is proportional to the square of the wind speed, W: τ = cW2 where c is the constant of proportionality. So if the wind speed increases from 1 m s−1 to 4 m s−1 then wind stress will increase by a factor of 16. This large jump in the wind stress happens because when the...

...and has published over 70 peer-reviewed papers in journals of high-scientific standing. He currently chairs the UK-node of the NASA Solar System Exploration Research Virtual Institute (SSERVI) comprising of over 100 members from 15 UK higher education institutions. In the video below, Mahesh discusses the far side of the moon and why we need samples from it. Transcript...

...energy (usually from electromagnetic radiation or light). When lanthanides are illuminated with visible light, their electrons absorb the energy contained within the incoming photons of light, and most of this energy is, in turn, emitted in the form of light within the visible and near-infrared range of the electromagnetic spectrum. In medical imaging,...