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Posts tagged cold

January 30, 2012


refrigerator coils

The Rolling Boil That Cools Your Food

It sounds crazy, but household refrigerators keep food cold by bringing liquid fluorocarbon to a boil.

January 10, 2012


a hot air balloons flys past a snowy mountain

Hot Air: The Physics Of Rising Air

Learn more about the physics of hot air and why mountain tops are so cold.

September 1, 2011


open refrigerator

Heating Your Kitchen With Your Refrigerator

All the refrigerator does is move heat, or energy, from one place to another. As the food inside the refrigerator loses its heat and gets colder.

June 3, 2011


Young penguins pose for the camera

To Keep Warm, Penguins Do The Wave

By synchronizing movements and huddling with one another, Emperor penguins can stay warm in the coldest place on Earth.

March 17, 2011


lifting weights

I’m Sick But Is It Safe To Exercise?

Is there truth to the saying, "sweating out a cold?"

September 27, 2010


Frost-free freezer

Frost-Free Freezers And Sublimation

How does sublimation change the way ice cubes look?

July 23, 2010



Breezy Summer Beaches

Ever wonder why it is breezy at the beach in summer?

June 2, 2010



Why Does Ice Cream Melt On A Hot Day? The Answer: Heat Conduction.

It's human intuition that something cold left outside in the sun will melt... but why?

October 6, 2009


A fridge stocked full of food.

Why We Refrigerate Fruits and Vegetables

Everyone knows you should put spinach and berries in the refrigerator, but how do cooler temperatures keep most fruits and vegetables from spoiling rapidly?

August 14, 2009


Bush-cricket on leaf

How To Calculate The Temperature With The Chirp Of A Cricket

Ever been camping and wondered what the temperature was? Here's a way to find out! All you need is wrist watch, your ears, and a little patience.

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