Derek Zabinski

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7 Must-Read Books on Time

Time is the most fundamental common denominator between our existence and that of everything else, it’s the yardstick by which we measure nearly every aspect of our lives, directly or indirectly, yet its nature remains one of the greatest mysteries of science. Last year, we devoured BBC’s excellent</i> …

Simple harmonic motion: the swing of the pendulum

Yesterday my daughter saw the famous Tacoma Narrows bridge video for the first time in a talk by Roma Agrawal at the Royal Institution. As an example of oscillatory motion it made, as it always does, a profound impression.<p>Oscillatory motion is everywhere. The swing of the pendulum seems to be an …

Exponential Functions: Compound Interest

Return to the Lessons Index | Do the Lessons in Order | Get "Purplemath on CD" for offline use | Print-friendly page<p><i>Exponential Functions: Compound</i> …

Reading the minds of the ‘dead’

Thousands of patients remain trapped in a vegetative state between life and death. Three scientists are working to free them, as Roger Highfield reports.<p>“Imagine you wake up, locked inside a box,” says Adrian Owen. "It's a perfect fit, down to every last one of your fingers and toes. It's a strange …

The Brain

Chemists Expand Nature's Genetic Alphabet

For the first time, scientists have expanded life's genetic alphabet, by inserting two unnatural, man-made "letters" into a bacterium's DNA, and by showing that the cell's machinery can copy them.<p>The advance means that scientists have a new tool for exploring how life encodes information, which …

Vein scanning : Pay with your hand

New payment technique scans your palm’s unique vein pattern<p>Paying for a coffee or lunch by simply scanning your palm might sound like science …

Credit Cards

Science Shows Why Peeing In The Pool Is Even Yuckier Than You Thought

In the summertime, when the weather is fine, you may have swimming on your mind. A swimming pool dip can cool you off. But some other bodily functions may produce unhealthy chemical reactions. Urinating in a chlorinated pool can lead to small amounts of chemicals that might irritate your lungs, …

2018’s 2nd Blue Moon on March 31

The March 31 Blue Moon is the 2nd Blue Moon of 2018. We haven’t had 2 Blue Moons in a year since 1999 and won’t again until 2037.<p>We had a Blue Moon …

What's In Your Drinking Water?

The liquid pharmacy in your glass, and why you shouldn't be too concerned<p>In the 1970s, several studies turned up pharmaceuticals in treated U.S. sewage water, and drugs have been a known unknown in water supplies ever since. Recently, researchers at the Environmental Protection Agency tested 50 …