How does light work?
When describing the way light behaves it is important to remember that it travels like a wave at 300,000 kilometres per second (in a vaccum) but has the characteristics of particles.There are four distinct behaviours of light:
Without reflection, nothing would be visible. When light from the Sun or from light bulbs hits an object it is reflected and when this ...
How do we create light?
HOW IS LIGHT CREATED?
Light is not only the connection between us and the Universe, light is also a form of energy and therefore conforms to one of the most basic laws of physics, the conservation of energy. The conservation of energy dictates that energy cannot be created or destroyed only converted from one form to another. By abiding with this ...
The history of light
HISTORY OF LIGHT
Our modern understanding of light has been shaped by the greatest scientific minds throughout time. Philosophers as early as Pythagoras (c. 500BC) and Euclid (c. 300BC) wrongly speculated that light rays emerged from the human eye to illuminate objects while other Grecian theorists Epicurus and Ptolemy (c. 150AD) were closer to the truth in their belief that objects ...