A few metres can be worth a couple of degrees and three weeks. Here are fourteen.
1. A Wall Facing the Sun Is a Storage Heater
Masonry absorbs heat through…
Thunder is usually described as the noise lightning makes, which suggests the bolt itself is loud in the way a bell or an engine is loud. It is not. Lightning…
The shape is the instrument reading. Here are seventeen.
1. The Fluffy White Heap With a Flat Base
Cumulus forms where warm ground heats a bubble of air until it…
Nearly everyone learns that a rainbow is sunlight split into colours by raindrops, which is true and which explains almost none of the things that are actually strange about rainbows.…
There is a question about weathervanes that catches almost everybody out, and it concerns which way the pointer faces.
The natural assumption is that the arrow shows where the wind…
The air around you is holding water you cannot see, and the amount it can hold depends almost entirely on temperature. Cool it enough and the water has to go…