Stop using modafinil and call your doctor at once if you have any of these serious side effects: 1  fever, sore throat, headache, and vomiting with a severe blistering, peeling, and red skin rash; 2  bruising, severe tingling, numbness, pain, muscle weakness;  easy bruising or bleeding;
Laser light is monochromatic, directional, and coherent Monochromatic: The light emitted from a laser is monochromatic, that is, it is of one wavelength (color).In contrast, ordinary white light is a combination of many different wavelengths (colors).Directional: Lasers emit light that is highly directional.hat is the only characteristic of laser light. Ordinary light has a bunch of light waves where the timing of the waves has no relationship from wave to wave, so it is not coherent. Let me touch on why what other people have said is not right.
How they're made. Our eyes can detect only a tiny part of the electromagnetic spectrum, called visible light. This means that there's a great deal happening around us that we're simply not aware of, unless we have instruments to detect it. Light waves are given off by anything that's hot enough to glow. This is how light bulbs work - an electric current heats the lamp filament to around 3,000 degrees, and it glows white-hot. The surface of the Sun is around 5,600 degrees, and it gives off a great deal of light.