Tate Modern: Jonty Bravery jailed for throwing boy from balcony

Image copyright Policeman Screenshot Jonty Bravery was 17 when he was charged with attempted murder. A teenager who threw a six-year-old boy from a 10th-floor balcony at London’s Tate Modern has been jailed for at least 15 years. Jonty Bravery, 18, of Northolt, planned an attack and attacked young children …

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New ideas about energy levels in quantum dots

An electron within a quantum dot is raised by a photon (green waveform) to a higher energy level. The result is a so-called exciton, an excited state consisting of two electrons and a hole. By emitting a photon (green waveform), the system returns to the ground state (green path). In …

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