This type of cable is commonly supplied in ready made DIY telephone extension kits; the type that are plugged in rather than require hard wiring. The reason this cable is so common is that it is very cheap and it is easy to install the connectors on the end.his cable is used for and works well for voice and ADSL as its twisted pair construction provides some resistance to interference. As the CW1308 cable is essentially the same spec cable is used throughout the whole telephone network, it known to work well.
How are visible light waves made? Visible light waves are made when a photon is emitted from a source and has a frequency, or the correct am mount of energy, to create visible light at a specific color.
Light is made up of tiny particles called âcorpusclesâ having negligible mass. 1  These particles (corpuscles) are perfectly elastic. 2  The corpuscles are emitted from the luminous sources such as Sun, candle, electric lamp etc. 3  The tiny particles (corpuscles) always travel in a straight line in all directions.