Science Facts Set-37

• The safety match was invented by Gustaf Erik Pasch (in the year 1844). It was later improved by Johan Edvard Lundström.
• Cartography is the science of making maps.
• Cobalt-60 is an artificial radioactive isotope of cobalt used for sterilizing surgical instruments.
• Photoelectric effect was discovered by Heinrich Hertz and Wilhelm Hallwachs in the year 1887.
• Sheep can recognize individual human and sheep faces, and remember them for years.

• Silumin is an alloy of aluminium and silicon used for casting purposes.
• Molten lava is up to 100,000 times as viscous as water.
• An acre of rich fertile farmland may contain up to 1,750,000 earthworms.
• The first colour photograph was created by the Scottish physicist James Clerk Maxwell, with the help of the English photographer Thomas Sutton, in the year 1861.
• Capybara is the largest living rodent in the world.