Pressure II, Segment 11: Toricelli

In the 1600s, Evangelista Toricelli developed a barometer — a device used to measure air pressure. Toricelli put mercury inside a bent glass tube (shaped something like an “L” or a candy cane). The high end of the tube was capped; the low end was open. (Air pressure kept the mercury inside.) When the outside air pressure rose, air would push inside the low end, causing the mercury to rise.

Toricelli noticed that a change in the air pressure predicted a change in the weather. This principle is still used in meteorology today.

Click to subscribe to our podcast!
Subscribe to our podcast!

Segment 11 Download Links
Use these links to download the movies to your computer. You can “control+click” to save the file.

Explore posts in the same categories: Podcast Ready, Pressure 2 Episode

Tags: , , , , , , , , , , , , , , ,

You can comment below, or link to this permanent URL from your own site.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

%d bloggers like this: