Why does light carry energy even though it has no mass? This video explains the real physics behind photons, energy–momentum relationships, and how light can transfer energy and momentum without mass.

In this video, we explore five key areas of physics: **Classical Mechanics:** Newton’s second law (F = ma) explains the relationship between force, mass, and acceleration. The law of universal ...

Students who topped courses in the HSC in 2025 include Yao Xiao (extension 2 English); Sophie Firek (legal studies); Terry Chen (maths extension 2) and Stacy Zhang (chemistry and biology).Credit: ...

When Stephanie Ward squealed with joy on the phone, her mother assumed it was because Pizza Hut had finally accepted her job application. “She thought I was getting excited about that. When I got off ...

The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...

This post contains spoilers for Severance. This article breaks down Severance Season 1's ending. If you're caught up through Season 2, check out our Severance Season 2 Ending Explained. In a world ...

The Chicago Manual of Style is an American English style guide published by the University of Chicago Press. The Manual’s guidelines for publishing, style and usage, and citations and indexes—known as ...