Exploring Light and Infrared Radiation

Who discovered the planet Uranus?

• Isaac Newton

• Galileo Galilei

• Albert Einstein

• Sir Frederick William Herschel

What did Herschel discover that is beyond visible light?

• Ultraviolet light

• Microwaves

• Infrared radiation

• Gamma rays

What is the primary source of infrared radiation?

• Heat or thermal radiation

• Water

• Electricity

• Chemical reactions

What type of lens material is used in infrared cameras?

• Germanium

• Plastic

• Glass

• Silicon

What year was the first thermal imaging camera for military use developed?

• 1972

• 1943

• 1965

• 1958

What does emissivity refer to in the context of infrared thermography?

• The size of the object

• The color of the object

• The shape of the object

• The efficiency with which an object emits infrared radiation

What can thermal imaging cameras detect?

• Sound waves

• Magnetic fields

• Heat loss in buildings

• Wind speed

Which animals can detect infrared radiation?

• Rattlesnakes

• Cats

• Dogs

• Birds

What is the temperature of the Sun in degrees Celsius?

• 5500 degrees Celsius

• 1500 degrees Celsius

• 3500 degrees Celsius

• 4500 degrees Celsius

What does a thermal imaging camera measure?

• Air pressure

• Sound intensity

• Light brightness

• Infrared radiation