W hen you hop in your car to head to work, drop your kids off at school or make a Target run, how many traffic lights do you ...

Have you heard we may start to see a new color on our traffic lights here in Texas in the not-so-distant future?

Typically, the doc explains, a yellow light is preset to run for a tenth of the posted speed limit. In cases where the speed limit is less than 30 mph, though, you can still expect a three-second ...

You can use a prism to split (or disperse) white light into a spectrum of colours: red, orange, yellow, green, blue, indigo and violet. Dispersed means that the colours are separated out.