Many people are concerned that laser pointers will hurt their eyes if they look at the laser light. So can laser pointers hurt your eyes? If you look at a laser pointer for a few seconds should you be concerned? The most common problem associated with laser pointers and the eye is a condition called flash blindness. Flash blindness occurs when the eye becomes dazzled after being exposed to a bright light. Most people have experienced flash blindness after having their picture taken by a camera with a flash.
The sun is the ultimate source of almost all kinds of energy on earth, either directly or indirectly. Fossil fuels (coal, oil and gas) are the transformed forms of plants (and animals) which once lived on the earth and grew capturing the energy of the sun. Biomass is a product of photosynthesis where the sun has the major role.
Non-renewable energy is energy from fossil fuels (coal, crude oil, natural gas) and uranium. Fossil fuels are mainly made up of Carbon. It is believed that fossil fuels were formed over 300 million years ago, when the earth was a lot different in its landscape. It had swampy forests and very shallow seas.ir, water and land pollution are all consequences of using fossil fuels. In the pages that follow, we shall take a look at what each source of non-renewable energy is made of, and how they are used. Note that not all non-renewable energy comes from fossil fuels. There is also uranium, which is not a fossil fuel.