Physics World  August 2021

Features: Top tips for super sandcastles

Frontiers: What’s the optimal size for a windfarm?

News: Go-ahead for the €2bn SKA radio telescope

News: LEGO microscope opens up the world of the tiny

News: China emerges as global space power

Critical Point: What do holidays mean to you?

Transactions: Can a holiday make you money?

Forum: Why taking time out is crucial for students

Features: Top physics-themed holidays

Features The twisty, turny physics of rollercoasters

Reviews: Philip Ball reviews “Einstein’s Fridge” by Paul Sen

Reviews: Sabine Hossenfelder on maverick theorist Jesper Grimstrup’s new book

Reviews: David Appell reviews “Probable Impossibilities” by Alan Lightman

“The Mirror Trap”: an unusual quantum-linked online play

Careers: The best way to bag a summer student internship

The latest physics jobs and courses

Lateral Thoughts: When candyfloss goes cosmic