Articles Tagged with Ptolemy

A simpler theory (II)

Published on July 11, 2023July 9, 2023 by fivecolorssandt@icloud.com

Writing down the equation

We notice how mathematical notation affects scientific progress.

Better but harder

Published on October 18, 2022October 17, 2022 by fivecolorssandt@icloud.com

Simple becomes difficult

We ponder how the same scientific task gets harder with time.

When there are two truths

Published on September 21, 2021September 20, 2021 by fivecolorssandt@icloud.com

Aristotle vs. Ptolemy

We point out an uneasy tension beneath an apparent unity.

A simpler theory

Published on September 14, 2021September 12, 2021 by fivecolorssandt@icloud.com

Measuring complications

A simple idea can become a complicated thing to implement.

Four elements, four humors

Published on December 1, 2020December 1, 2020 by fivecolorssandt@icloud.com

Before the revolution

We conclude that it can be useful to teach something that is actually wrong.

Numbering the stars (I)

Published on February 26, 2019February 25, 2019 by fivecolorssandt@icloud.com

Big numbers

We look at answers to an obvious question.

Saving the phenomena

Published on June 5, 2018June 1, 2018 by fivecolorssandt@icloud.com

Fixed stars, part II

The Middle Ages were a hotbed of astronomical controversy in Europe.