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.
Storey's Guide to Raising Sheep: 4th Edition
  • 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.
Capybaras (Animals of the Rain Forest)

Science Facts Set-36

  • One litre human blood contains about 4,000,000,000 - 11,000,000,000 white blood cells.
  • Tachometer is an instrument used to measure the speed of revolution of a revolving disc or shaft.
  • Sloth bears are used as performing pets due to their tameable nature.
  • Ballistics is the branch of mechanics concerned with the study of projectiles.
  • More than 80% of the total described animal species of the Earth are arthropods.
What Is an Arthropod? (Science of Living Things)
  • Silicon is the second most abundant element in the Earth's crust (the first being Oxygen).
  • As gamma rays are a form of ionizing radiation, they pose severe health hazard when absorbed by living tissue.
  • The mass of Planet Saturn is roughly 95.152 times the mass of the Earth.
  • Capillary feed fountain pen was invented by Lewis Edson Waterman.
  • Polar bears are nearly invisible under infrared photography.
Polar Bears

      Science Facts Set-35

      • The saltwater crocodile is the largest living reptile in the world.
      • Stars account for 98% of the matter in a galaxy.
      • Meninges is a system of membranes that encloses the brain and the spinal cord.
      • The axial tilt of the Earth is nearly equal to 23.4°.
      • The African bush elephant is the largest living terrestrial animal in the world.
      • The concept of atomic number was first proposed by Henry Moseley.
      • Hardness of a substance is measured by using Mho's scale.
      • Safety Pin was invented by Walter Hunt in 1849.
      • The estimated mass of the Earth is 5,940,000,000,000,000,000,000 metric tons.
      • The Orangutan is the largest tree-dwelling mammal in the world.
      Orangutans (WorldLife Library)