Physics

Curiously, Schrödinger’s cat came to mind one night when I was getting dinner together from a kit my kid gets in the mail every week.

There’s some recently published research on climate change¹ that you can easily incorporate into your next lesson on metric conversions and unit analysis. The article gives a report on ocean heat content (OHC) measurements.

Galinstan is the tradename for a liquid metal alloy that is comprised of three elements: gallium (68.5%), indium (21.5%), and tin (10%).¹ It behaves a lot like mercury but has significantly lower toxicity. Because of this, Galinstan is used as a replacement for mercury in a variety of applications.

A variety of interesting coloring books are available on the market that use water as a coloring agent.¹ When water is applied to the pages of these books, colors seem to appear like magic. When the water evaporates, the colors disappear. This allows the pages of these books to be colored over and over again.

About a decade ago, I wrote briefly about the interesting experiment of throwing boiling hot water into air that is below -18°C (0°F) (see Ice Clouds).

Congratulations on becoming a PAEMST state finalist. Just when you think you can breathe a sigh of relief and celebrate that you are a state finalist, you realize you still have a week to write another 9000 very carefully chosen words. 

Various items (hot dogs, bananas, flowers, racquetballs, plastic cups) show properties akin to glass when chilled in liquid nitrogen.^1-4 Objects such as racquetballs and plastics behave in this manner because they are made of polymers, and polymers can become cooled below what is known as the glass transition temperature (T_g) for t