If you cut one in half, each half contains whole views of the entire holographic image. The same is true if you cut out a small piece — even a tiny fragment will still contain the whole picture. On top of that, if you make a hologram of a magnifying glass, the holographic version ...
or SAD, a form of depression that tends to occur seasonally, during the darker winter months.) Still, a half hour in front of even the most powerful light box does not provide as much phototherapy as does a half hour outside on even...
Vitamins are organic (carbon containing) molecules that mainly function as catalysts for reactions within the body. A catalyst is a substance that allows a chemical reaction to occur using less energy and less time than it would take under normal conditions. If these catalysts are missing, as ...
How many half-lives are required to yield a mineral with 156.25 atoms of U238 and 19,843.75 atoms of Pb206? The rate constant of the decomposition of Drug A in human body is 0.02 month^{-1} (followed the rate law of first-order reactions), and it is of no effect when 30% of A...
Imagine, however, that you were you were to rapidly turn the power to the bulb on and off (say 100 times per second) -- then the bulb would only burn half as brightly because its duty cycle is 50 percent (half on, half off). "Rapidly switching the bulb on and off" is the basic...
(tires,transmissions, et cetera), we'll ignore that part of the car and compare efficiencies up to the point where mechanical power is generated. Let's start with the fuel cell car. (All of these efficiencies are approximations, but they should be close enough to make a rough comparison....
White acknowledged on her blog that the thought of a week without makeup scared her, yet it was that response to the idea that let her know that she was on the right track. Makeup had become something she had to put on to leave the house, and White wanted to understand how cosmetics...
noises also induced more reactions in the listening infants, like smiling or lip moving, which approximates sound making. The team theorizes that this attraction to other infant sounds could help launch the learning process that leads to speech.' It may be some property of the sound that is ...
There are many ways to make slime with your kids that don't call for borax or liquid starch. Although these ingredients are not overly dangerous, they can be harsh and can cause skin reactions for some children, so try using cornstarch instead. ...
"They don't give you an instruction manual on how to care for a baby at two and a half pounds," Anthony Daly told us, talking about his son, Anthony "Little Tony" Daly IV. "Every day we worried that he wouldn’t make it." ...