Microwaves penetrate 1cm into the food and increase kinetic energy in fat and water molecules on the surface, the energy is then conducted or convected to the rest of the food
1 of 5
What are the properties of a laser beam?
Narrow laser beam of singe coloured light, waves have same frequency and wavelength and are coherent and in phase
2 of 5
How is information stored and read from a CD?
Information is stored by pits and lands on the surface of the disc, information is read by reflection of laser from pits and lands
3 of 5
How does darker skin reduce the risk of skin cancer?
Absorbs UV radiation so a lot less UV can reach the underlying tissue
4 of 5
What is meant by frequency?
Number of oscillations in a second
5 of 5
Other cards in this set
Card 2
Front
What are the properties of a laser beam?
Back
Narrow laser beam of singe coloured light, waves have same frequency and wavelength and are coherent and in phase
Card 3
Front
How is information stored and read from a CD?
Back
Card 4
Front
How does darker skin reduce the risk of skin cancer?
Comments
No comments have yet been made