Physics

Cards (21)

  • Infrared can penetrate solid objects but not very solid objects
  • The wavelength of visible light is between 400nm to 750nm
  • Radio waves have the lowest energy and are used by radio stations to transmit signals over long distances.
  • Microwaves are used in microwave ovens to heat food quickly.
  • Frederick William Herschel discovered Infrared
  • Gamma rays were discovered by Paul Villard
  • Infrared is commonly used in thermal imaging and heat sensors
  • Visible light is responsible for our perception of colors
  • Ultraviolet radiation can cause skin cancer and damage to eyes
  • X-rays are used in medical diagnosis, such as X-ray machines and CT scans
  • X-rays are used in medical diagnosis and treatment
  • Gamma rays have the highest frequency and shortest wavelength among all types of electromagnetic waves.
  • Who discovered the UV light in year 1981? Johann Rittter
  • What did Herschel use to scatter the light? Thermometer and Prism
  • What did Johann Ritter utilized in his experiment? Silver Chloride
  • What does ultra mean? Beyond
  • Which type of UV is not harmful to us? UV-A
  • What type of UV cause sunburn? UV-B
  • Type of UV that is most harmful but is absorbed by the atmosphere? UV-C
  • What is the cause of an Aurora? Solar Storm
  • Ultraviolet radiation is used in sterilizing water from drinking fountains