SPEED CHARGE: Charging a cellphone seems to have grown quicker over the years, but Eesha Khare of California thinks it should take only 20 seconds. She's invented a tiny flexible supercapacitor that can last for 10,000 charge-recharge cycles, compared with 1,000 cycles for conventional rechargeable batteries. So far
Tech Universe: Tuesday, 28 May
By Miraz Jordan
Herald online·
3 mins to read
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Charging your phone could soon only take 20 seconds. Photo / Thinkstock
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MIX AND MATCH: Wind energy or ocean power? In Japan they're not choosing between the two, but incorporating both into a single turbine. Mitsui Ocean Development & Engineering Company's hybrid system combines a floating vertical-axis wind turbine with an underwater turbine that generates power from ocean currents. The hybrid effectively doubles the efficiency of a typical wind or ocean current turbine. The wind turbine portion is expected to be 47 metres tall, while the underwater portion will be 15 metres in diameter. Each turbine could generate enough energy for 300 households. Go on, add some solar panels.
Miraz Jordan, knowit.co.nz