Quick facts about batteries

Tuesday, November 2, 2010

  • The first battery was created by Italian Alessandro Volta in 1800.
  • A battery is a device that converts chemical energy directly to electrical energy.
  • The world's largest battery is in Fairbanks, Alaska, composed of Ni-Cd cells.
  • Lead-acid batteries use over 80% of the lead produced in the United States.
  • There are 2 types of batteries: primary batteries, which are designed to be used once and discarded when they are exhausted, and secondary batteries, which are designed to be recharged and used multiple times.
  • The energy used to manufacture rechargeable and single-use batteries is fifty times greater than the electrical energy they produce when been discharged.
  • Sodium-sulfur batteries are being used to store wind power.
  • About 60% of the world’s lead comes from recycled car batteries.
  • The single largest source of mercury metal is found in household batteries.
  • Car batteries have the highest recycling rate out of all recycled materials.
  • Even if never taken out of the original package, disposable batteries can lose eight to twenty percent of their original charge every year at a temperature of about 20°–30°C.
  • One NiCad mobile phone is enough to pollute 600,000 litres of water.
  • Few car batteries last beyond 6 years of regular use.
  • Battery life can be extended by storing the batteries at a low temperature, as in a refrigerator or freezer, which slows the chemical reactions in the battery.

What is a depressant?

A depressant is a drug that reduces the activity of various body functions. Some depressants such as anesthetics, sedatives, antiepileptics, narcotics analgesics, and some muscle relaxants, slow nervous and muscular activity by acting on the central nervous system. Tranquilizers are depressants that affect only part of the nervous system. They induce relaxation without causing total depression.
 
 
 

Facts about birthstones

Facts about birthstones
Did you know? The current assignation of stones to months was established in 1912

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