Examlex
The light waves represented by the three rays shown in the diagram all have the same frequency. 4.7 wavelengths fit into layer 1, 3.2 wavelengths fit into layer 2, and 5.3 wavelengths fit into layer 3. Rank the layers according to the speeds of the waves, least to greatest.
Copper
A metal used in electrical wiring and telecommunication cables due to its excellent electrical conductivity.
Fiber-Optic
Technology involving thin strands of glass or plastic that transmit data as pulses of light, allowing for high-speed internet and data communications.
Cable
A medium used for transmitting electrical signals, data, or power, often referring to telecommunications and networking infrastructure.
DSL
Digital Subscriber Line is a collective term for technologies that enable internet connectivity through the digital data transmission over local telephone network cables.
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