Hewitt-Drew-it! 21. Newton's Third Law

Paul and wife Lil illustrate that one cannot touch without being touched — with supporting examples.

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Rainbows and Double Rainbows - Sixty Symbols

The physics of rainbows with Professor Mike Merrifield.

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Liquid crystals: a new type of LCD display screen

These very low power screens will have a variety of uses in the market in the future. They can be update wirelessly and the first place you can expect to see them is in a supermarket near you. Dr Cliff Jones, Shaun Gray and Dr Emma Wood of ZBD Displays Ltd, winner of the 2012 Innovation Award, awarded by the Institute of Physics for developing and commercialising a novel e-paper display for use in shelf-edge labelling in supermarkets and other retail settings. ZBD has created an e-paper display by applying a sub-micron texture onto the glass surface of a liquid crystal display, allowing it to hold an image even when the power is removed. The work is the product of world-leading research at the liquid crystal research centre at DERA.

http://www.iop.org/activity/business/innovation/page_53257.html

 

Hewitt-Drew-it! 20. Skydiver Problem

Paul poses and solves a problem involving Suzie Skydiver, who dives and attains terminal velocity.

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Higgs Boson Update From CERN

"For a report on ABC's Catalyst program (http://www.abc.net.au/catalyst/), I visited the Large Hadron Collider in Switzerland to find out what is being done now that the Higgs Boson has been discovered.

 Although its mass has been measured around 125-126 GeV most of the other properties of the particle remain unknown. Its spin appears to be 0 or 2 but more results are required to nail this down. If it is the standard model Higgs, the spin should be 0, resulting in a fairly symmetric distribution of decay products in the detectors.

 We may know this year if it's not the standard model Higgs - this would be the case if it doesn't decay into specific particles with the expected frequency. However if it is the standard model Higgs, it may take many more years to be certain. The large hadron collider will be shut down in 2013 for upgrades so that higher energies up to 14 TeV can be tested. Right now the LHC is operating at 8 TeV. The next announcement is expected in December."

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