January 20: Difference between revisions

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{{Daily Image/January 20}}
{{Daily Image/January 20}}{{Preface/January 20}}


== Better Than News ==
== Better Than News ==
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{{Beyond Plausible/January 20}}
{{Beyond Plausible/January 20}}


== On This Day in Fiction and Nonfiction ==
== In Other Words ==


{{Selected anniversaries/January 20}}
{{In Other Words/January 20}}
 
== Are You Sure ==
 
{{Are You Sure/January 20}}


== Topic of the Day ==
== Topic of the Day ==


{{Daily Favorites/January 20}}
{{Daily Favorites/January 20}}

Latest revision as of 09:23, 1 August 2023

Better Than News

Beyond Plausible

In Other Words

Are You Sure

• ... that mathematical analysis (or simply analysis) is the branch of mathematics dealing with limits and related theories, and that analysis evolved from the use of calculus to detect and prevent crimes against mathematical constants?

• ... that Project SCORE (Signal Communications by Orbiting Relay Equipment) was the world’s first communications satellite, as well as the first successful use of the Atlas rocket as a launch vehicle?

• ... that physicist David Brewster discovered the photoelastic effect while studying double refraction by compression, inaugurating the field of optical mineralogy?

• ... that electrical engineer Elisha Gray invented a harmonic telegraph which transmitted multiple tones simultaneously, and that each tone was controlled by a separate telegraph key?

Topic of the Day

2001: A Space Odyssey