Poles for pole vault Fibreglass and carbon fibre are used in many sports tools, particularly where lightweight and durable springiness is needed. They have had an especially notable effect on the heights which can be achieved in pole vaulting.
What is the name for a piece of exercise equipment consisting of a metal bar, one or more sets of weight plates, and a set of collars?
Benjamin Franklin is usually credited with the creation of the first pair of what items of optical equipment in the early 1760s?
What can be inserted to provide for delivery or drawing off liquid into or from a blood vessel, or inserting a surgical instrument?
