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 electromagnetic radiation that falls within the visible part of the electromagnetic spectrum. Light travels as a series of transverse waves and does not require a medium for its propagation.... Light is electromagnetic radiation that falls within the visible part of the electromagnetic spectrum. Light travels as a series of transverse waves and does not require a medium for its propagation. Light is described by its wavelength and frequency. The wavelength of visible light is 400 nanometers to 700 nanometers. Light travels with different speeds in solids such as glass and in liquids. The light from the sun is polychromatic light as it is composed of light of various colors. Monochromatic light is light of one color and wavelength. The speed of light in a vacuum is approximately 3,00,000 kilometers per second. Learn more about Electricity