IN continuation of our letter of October 29, we find that a reflexion grating does not show the bands so well as a quartz prism, because metals, e.g. silver-on-glass, do not reflect all this kind ...

How can we measure visible light? The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation. (1) Different types of electromagnetic radiation such as radio ...

A rainbow contains all the colours of the visible spectrum. It is often possible to see a secondary bow, which is slightly larger and fainter than the first – and the colours are in the opposite ...

Researchers at Cornell University have built the world’s smallest walking robot, at just two to five microns across: so small ...

Nature Takes Flight [The Visible Light Spectrum] — by Bermudian artist Michaela Antoinette at the King Street car park. A ...

They're your eyes, and they receive signals that fall in the range of visible light ... There's lots to discover in the electromagnetic spectrum. Here's a tour that begins with radio waves ...

The Sombrero galaxy, which is about the size of the Milky Way, is positioned some 30 million light-years away. The Webb telescope has several different instruments, but most of the widely shared ...