At 9.01AM today, the Sun crosses the Earth’s equator, marking the vernal equinox, the date when the direction of sunrise is due east and sunset due west. The Earth’s axis is at right angles to the line from Sun to Earth, the Sun is directly over the equator and the lengths of day and night…

ThatsMaths

18.04.2025

Euler’s Identity: the Most Beautiful Equation in Mathematics – ThatsMaths

A recent entry in the visitor’s book of the James Joyce Tower & Museum in Sandycove, Dublin perplexed the Friends of Joyce’s Tower, the volunteers who run the museum. The entry, reproduced as the boxed equation in the photograph, seemed as impenetrable as a passage of Finnegans Wake and quite beyond decryption. When invited to…

ThatsMaths

15.05.2025

The James Webb Telescope: Viewing the Universe from Lagrange Point L2 – ThatsMaths

There are five sweet spots where a spacecraft can keep pace with Earth as both orbit the Sun. They are called the Lagrange points, after the brilliant French mathematician Joseph-Louis Lagrange who found special solutions to what is called the “three-body problem”. To locate the second Lagrange point, L2, draw a line 150 million km…

ThatsMaths

19.06.2025

The Future of Physics may be Surreal – ThatsMaths

Imagine the Earth were to shrink to the size of a marble. We might be in trouble, but the planet would continue its smooth course around the Sun while the Moon would maintain its orbit, circling Earth once a month. Isaac Newton proved that the Earth’s gravitational pull would be the same even if all…

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Science

The Emergence of Spring – ThatsMaths

Euler’s Identity: the Most Beautiful Equation in Mathematics – ThatsMaths

The James Webb Telescope: Viewing the Universe from Lagrange Point L2 – ThatsMaths

The Future of Physics may be Surreal – ThatsMaths

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