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Not all fasteners require the use of a screwdriver to install or remove. There are different types of fasteners. While fasteners with a slotted or Philips head typically require a screwdriver, those with a hexagonal recess only require a hex key. Hex keys are simple, manually operated tools that are used to install and remove…

Not all cables are made of copper or aluminum. When used to transmit data, cables are often made of optical fibers. Known as fiber optic cable, it’s used extensively in telecommunications applications. Even if you’re unfamiliar with fiber optic cable, you’ve probably used it to send or receive data. Homes and businesses throughout the world…

Take a look at our free online course, in partnership with the University of Strathclyde. We have partnered with the University of Strathclyde to produce a free online course, open to everyone, on the lives of the British railway worker from 1840 to 1914. The four-week course will look at a different category of worker,…