Science

Luminaires: Optics and Light Distribution

Learn how optics in luminaires allow different light distribution curves and understand the effect on glare and how to measure it. Interested in lighting? Have you registered for your free account with the Ledvance Training Centre yet? It’s packed with training videos on all sorts of lighting topics, such as technology, products and applications, so it’s a fantastic resource if you’re interested in a career in lighting. The bite-sized videos have got…

Lighting technology: What is light?

Learn how physics describes light. Discover the whole electromagnetic spectrum and see how any colour is created as a mixture of three primary colours. Have you checked out the Ledvance Training Centre yet? If you’re interested in lighting, this online platform is perfect, packed with bite-sized training videos with run times ranging from eight to 24 minutes, so they’re great to fit in around your apprenticeship. The modules cover a variety of…

Power factor correction – What is it? Why is it required? How is it achieved?

Power factor basics: Power quality is essential for efficient equipment operation, and power factor contributes to this. Power factor is the measure of how efficiently incoming power is used in an electrical installation. It is the ratio of active to apparent power, when: Active Power (P) = the power needed for useful work such as turning a lathe, providing light or pumping water, expressed in Watt or KiloWatt (kW) Reactive…

The basic principles of electromagnetism

This article will provide a basic introduction to the principles of electromagnetism and electric motors. As the name suggests, electromagnetism is a branch of physics that focuses on the interaction between electricity and magnetism. It plays a major role in most objects encountered in daily life. Electromagnetism is the interaction between conductors and fixed magnetic fields. This video provides an excellent overview of magnetic fields, flux density and motor effect.…

A review of electromagnetic induction

In this video, Gary Hayers of Tresham College takes a closer look at electromagnetism and the principles of generating AC. Student training aid to prove the basic principles of producing an alternating current (A.C) and developing and increasing an electromotive force (EMF) E = BLv. Videos are training aids for City and Guilds (C and G) and EAL courses Level 1, 2 and 3.

How to make basic Ohm’s law calculations

In this video, Gary Hayers from Tresham College talks through Ohm’s law calculations using voltage (V), current (I) and resistance (R).

Using Ohm’s law to find total resistance

In this video, Gary Hayers from Tresham College explains how to make basic ohm’s law calculations for series connected resistors. Check out Gary’s video explaining how to make basic Ohm’s Law calculations. Videos are training aids for City and Guilds (C and G) and EAL courses Level 1, 2 and 3.