29-9-2010 LAS VEGAS HOTEL'S DEATH RAYS
S3 Optics |
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Reflection by hotel windows causes a "death ray" that moves across the hotel's swimming pool while the Earth rotates. Find out what happens to the guests!
21-7-2010: CHINA'S NEW NUCLEAR POWER STATION
S5 Atomic & Nuclear Physics |
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Find out more about the new type of nuclear power station which uses fast neutrons rather than slow neutrons. What are the differences? What are its advantages?
15-12-2009: Cover-Up of Cobalt-60 Leakage in China
S5 Atomic & Nuclear Physics |
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Chinese scientists and government safety experts spent 48 days covering up an accident involving a highly dangerous gamma source, cobalt-60, near a densely populated area of Guangzhou's Panyu district.
29-5-2009: SHORTAGE OF MEDICAL RADIOACTIVE ISOTOPES
S5 Atomic & Nuclear Physics |
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Hospitals around the world were affected by the shortage of radioactive isotopes. Find out more about the problem by reading these news reports.
19-7-2008: FATAL CAR ACCIDENT LEFT NO SKID MARK
S4 Mechanics |
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The police is unable to estimate the speed of the car because no skid mark was left. Do you know how the speed of a car can be estimated from its skid mark?
16-7-2008: ICE-CREAM CAUSES SERIOUS SKIN BURN
S4 Heat |
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What is dry ice? Can you explain how the accident occurred in terms of heat transfer? Can you explain how the design of the container can be improved to prevent such accident?
11-7-2008: SUPERCONDUCTOR REPLACES COPPER WIRES
S5 Electricity & Magnetism |
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Heat loss in transmission lines is due to resistance in the copper wires. However, some materials are found to have no resistance at very low temperatures, called superconductors, which is an ideal material for lowering the heat loss. In April 2008, the world's longest superconducting cables began delivering electricity in New York, with the cables continuously cooled to 70K by liquid nitrogen.
4-7-2008: NUCLEAR PHYSICS & YOU
S7 Atomic & Nuclear Physics |
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Where was the World Wide Web created? It is a seldom known fact that it was from research in nuclear physics at CERN in Switzerland, where researchers carry out high-energy experiments to find out what particles and forces make up everything in our universe. After 10 years of construction, a new particle accelerator, called the Large Hadron Collider (LHC), has just been complete which will smash protons at an unprecedented energy. The large amount of data to be generated from LHC also calls for a new generation of the WWW, called 'the grid', to be developed at the same time.
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