Wikipedia has some pertinent info: Laser pointer. It depends on the power output of the laser, interesting stuff about the blink reflex. I'm not a medical professional, but it sounds like shining lasers in your eyes is a bad idea regardless! This is not as pertinent; I dislike the way the question is phrased.
The ultimate source of all energy on earth is light from the sun. Plants use that energy, along with carbon dioxide from the air and nitrates from the soil, to create sugars aâ¦nd lipids (fats) as well as amino acids (ingredients for DNA) through the process of photosynthesis.
1 Carbohydrates â are required for energy. 2  Glucose, which is a monosaccharide, is the most essential source of energy in the body. 3  The brain works entirely on glucose alone. 4  When an immediate source of energy is required, glucose is converted into glycogen which is stored in the liver.