1.   In addition, some bacteria and all green plants have evolved ways of using light as a source of energy.

2.   Lime lights were also used for magic lantern shows until they were superseded by the carbon arc.

3.   Sending such digital signals lends itself well to using light along optical fibres rather than electrical signals along copper wires.

4.   Fireflies use their light for attracting mates.

5.   It uses sound to perceive, and continuously update its perception of, the position of objects in three-dimensional space, just as we use light.

6.   And such parents may be more likely to use night lights, leading to a possible misinterpretation, the report said.

7.   And, because rotaxane molecule transistors could be switched on and off using light, there would be no bulky wire interconnections needed.

8.   Artificial light can be used to extend day length.

9.   As transistors get smaller, chip makers need to use light of increasingly smaller wavelengths to make their exposures.

10.   Be careful when using these lights around children and pets.