When a soaring firework rocket flies into the sky, it can make a marvelous pattern of colors. How in the world does it do that? This lesson focuses on fireworks, how they are made, and how they create the wonde
The most impressive display is the fire fountain, a fountain of bright orange lava pouring hundreds of feet in the air, for a few minutes or sometimes several hours. The more typical eruption style is a steady lava flow from a central vent, which can produce wide lava lakes, ponds of ...
Does a bad matchup between the New York Giants and Dallas Cowboys mean the NFL should change its approach to Thanksgiving? Is Colorado Buffalo Travis Hunter the Heisman favorite? Could Boise State leapfrog to a first round bye? Should Alabama be on upset alert again? Can Saquon Barkley beat ...
What is a hologram and how does it work? Laser beams are split up in order to construct a hologram, causing the light waves that make up the two parts of the beam to travel in similar fashion. It is due to this that the image seems to change. This is also what lends holograms thei...
How Does GPS Work? Explore More Space Is China Launching Fake Moon a Bright Idea? Space Exploring the Chinese Space Station Project Electronics How Satellite Radio Works Space How Many Moons Does Jupiter Have? We're Losing Count Science Vs. Myth ...
How does HDR for TVs work? There are two parts of the HDR system: the TV and the source. The first part, the TV, is actually the easier part. To be HDR-compatible, the TV should be able to produce more light than a normal TV in certain areas of the image. This is basically jus...
This allows colored dye solutions to enter the stone and impart a bright color. Brightly colored stones are often easier to sell and many people like them. Dye is usually used on light-colored, inexpensive, noncommercial stones that can be tumbled in a short amount of time. These include: ...
Bright, Brighter, Brightest! Light bulbs are ranked by their power -- the amount of light they put out in a certain period of time (measured in watts). Higher-watt bulbs have a bigger filament, so they produce more light. A three-way bulb has two filaments of different wattage -- typi...
In a typical yard light, therefore, you need four cells wired in series (see How Batteries Work for a discussion on series wiring). In this yard light, the four cells will produce 1.8 volts and a maximum of about 100 milliamps in full, bright sunlight. The solar cells are wired ...
Does it have a frequency like sound? And what are some of the common properties of light, such as absorption, reflection, refraction and diffraction? You might think scientists know all the answers, but light continues to surprise them. Here's an example: We've always taken for granted ...