What Is Solar Power?

What Is Solar Power?

Solar power is energy that comes from the Earth’s Sun. When scientists and ecologists speak about harnessing solar energy, they talk about finding technologies that collect solar rays and store that energy, converting it for use in heating homes and energizing the batteries which power everything from cars to flashlights. You might be wondering what “solar rays” are.

What Are Solar Rays?

The Sun produces solar rays through the process of nuclear fusion. The same process which explodes hydrogen bombs also power the vast energies of the stars. Only a tiny fraction of the heat and light put off by the Sun ever hits Earth, but if we could build technologies to harness the solar rays that do reach Earth’s surface, the human race could solve all of our energy needs.

What Is Solar Power?

In fact, the Sun already is the source of virtually all of the energy stored on the planet (besides the tiny amount of energy from other stars). This energy is stored in the form of the coal, oil, and natural gas we burn, as well as the calories found in the plants and animals we eat.

The problem is that collecting the energy stored in fossil fuels like coal and petroleum requires whole industries, while the burning of these fossil fuels to release the energy stored creates massive amounts of air and environmental pollution. To be able to catch solar rays and convert it into clean, efficient energy is a much better proposition.

Why Isn’t Solar Power Used More?

So you might be asking why our civilization doesn’t ditch fossil fuels and switch entirely to solar powered technologies. We don’t have the technological advancement yet to harness solar energies as cheaply as we can mine for coal and drill for oil and natural gas. That’s only going to happen when methods of capturing ultraviolet rays and powering our cities and transportation systems get cheaper, or the scarcity of our fossil fuels drive up prices so high that solar power because a feasible alternative.

You might ask why governments and private interests invest so much in perfecting solar power technology, if it’s more expensive than oil. Good investments in technology pay off over time, even if they don’t at first. The materials used to build and implement solar technology is too expensive right now, but working every day scientists and engineers work with those materials is another day closer to finder cheaper ways to produce them. Consider the rapid advances in aviation from the 1920s to the 1940s, as new and better materials–and better designs–came into usage.

Rapid Advances in Technology

As another example, look at the advances the “space race” and the lunar landings yielded. You might say that the space program is or was a waste of time, money, and resources, but exploring that little bit of space we’ve explored created much more rapid advances in satellite technology, telecommunications, and computer science. Every time you log onto your computer, every time you dial up on your cell phone, and every time you watch a sporting event live from the other side of the world, you are benefitting from the advances in technology made from public and private investments in technology.

So eventually, some genius is going to figure out a way to make solar power the cheapest energy science on the planet, and that will revolutionize the world economy, along with how we look (and cope) with a host of other social and geopolitical issues. Harnessing solar power and finding a cheaper, cleaner alternative to fossil fuels might happen tomorrow or next year, or it might be 20 years down the line, but it is going to happen–possibly before our supply of cheap oil runs out.

Solar Power in the Future

Who can say where the future of solar power lies? Science fiction writers have proposed technologies that seem outlandish by our scientific standards, such as the “Dyson sphere”, a technological sphere built around an entire star, so that a sci-fi civilization traps every single bit of light and stellar energy escaping from the star. I imagine our technologists will find less dramatic, more practical solutions to our energy crisis, but you can bet that harnessing “solar power” is going to be at the forefront of our energy solutions in the 21st century.

See also:

  1. Solar Garden Lights
  2. Solar Yard Lights
  3. What Is Green Energy?
  4. Are Light Bulbs Bad for the Environment?
  5. What Are Windmills and How Do They Work?
  6. Earth Day Coloring Pages