In solar PV Manufacturing; a wafer is a thin sheet of semiconductor (photovoltaic material) made by cutting it from a single crystal or ingot.
In building; a wall tie is a galvanised metal tie used to bond the inner and outer walls of a cavity wall together.
In electrics; a watt is the rate of energy transfer equivalent to one ampere under an electrical pressure of one volt. One watt equals one joule per second. It is the product of voltage and current (amperage).
In electrics; a watt hour is a unit of energy equal to one Watt of power being used for one hour.
In electrics; a waveform is the shape of the phase power at a certain frequency and amplitude. This normally takes the shape of a sinewave.
In building; winders are triangular stair treads often used when a staircase turns a comer.
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