I enjoyed this story enough that I’m going to declare ‘stories’ to be honorary demos. Which McCrory will likely argue is true anyway.
For the first time, we can confidently state not only how the Moon formed, but why the two sides are so different!
— read The Two Faces of the Moon by Ethan Siegel on Medium.
I’m not often a huge fan of computer-based demonstrations: if you’re going to show the reality of something, show it for real. However, when the thing you’re trying to show is abstract – like, for example, the immense scale of the solar system – then screen-based demos can make a lot of sense.
Take this fabulous side-scrolling solar system diagram, for example. It starts from the premise of the moon being 1 pixel high, and scales the rest of the solar system accordingly. Be warned: there’s a lot of scrolling involved.
A lot of scrolling.
The journey’s kept amusing by odd little snippets spaced between the planets in neptune-sized text, and the minimal design is particularly lovely. Hey, if you’re going to use a screen-based demo, use a good one.
(via everyone, but particularly Metafilter, where the comments thread also points to the impressive-looking Universe Sandbox. “Collide galaxies for fun.”)
With patience and a bit of wiggling, you can detect the magnet from nearly nearly three metres away. Which is astonishingly sensitive for a cake stand.
TV presenter & props chap Marty Jopson built a magnetometer using a laser pointer, a fridge magnet, and an Ikea cake stand. It was used a few weeks ago on BBC Stargazing Live.
(via Marty on Twitter).