Graphene-based Materials for Solar Cell Applications

WS2 has a bandgap in the visible region. Photo by Clara Piccirillo.

Researchers have developed a new solar energy device, made of graphene and the semiconductor, tungsten disulfide, which shows very good photovoltaic efficiency.

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First Rocket-Powered Flight of Virgin Galactic’s SpaceShipTwo

White Knight Two and SpaceShipTwo directly overhead during a flyby at Spaceport America. Photo credit:Flickr.com.

Are you ready for space tourism? Virgin’s SpaceShipTwo has taken its first rocket-powered flight; the owners are planning to open space up to the public – for a price.

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The Latest from CERN: It’s a Higgs!

Real CMS proton-proton collision events show expected characteristic of Higgs boson decay. (Four high energy electrons shown in green lines and red towers.) Image by CERN.

CERN has concluded that the Higgs-like particle they found earlier is indeed a Higgs Boson particle: A conclusion with many implications.

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The Most Significant Physics Breakthrough of 2012

The ATLAS experiment at CERN - visualizing two protons colliding. Image by CERN

CERN’s discovery of evidence of the Higgs boson particle (or particles) tops the list of the most significant physics breakthroughs in 2012.

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The Cavendish Experiment To Measure the Gravitational Constant, G

Newton's law of universal gravity. Image by DNA-Dennis

Reader’s question: How can we use the Cavendish experiment help us determine G, the gravitational constant, to measure the mass of the Earth?

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