Or search by topic
There are 3 NRICH Mathematical resources connected to Relativity, black holes and quantum mechanics, you may find related items under Mechanics.Broad Topics > Mechanics > Relativity, black holes and quantum mechanics
How fast would you have to throw a ball upwards so that it would never land?
A collection of problems related to the mathematics of fundamental physics.
Explore the energy of this incredibly energetic particle which struck Earth on October 15th 1991