‘Keyhole planting is when you utilise a raised garden bed that's in a keyhole shape. For example, a circular garden bed with a wedge cut out from it running through its diameter, like a keyhole.

The Godzilla Nebula is a cloud of gas and dust in the constellation Sagittarius that resembles the movie monster Godzilla. The image was captured by NASA's Spitzer Space Telescope.

This allowed them to see the creation of small keyhole-shaped pores in the component as a result of the vapour generated when the laser melted the metal alloys, and the cause of instabilities in ...

A laser typical of a 3D printer metal alloy printer oscillates heavily forming a “J” shaped keyhole which is unstable and collapses frequently leaving behind pores (top). When an appropriate ...