Physics
Ali Hamza
Physics
Why Guns Recoil and Rockets Work in Space
One rule explains a kicking rifle, a rocket in empty space and a boat that slides away when you jump. Here is conservation of momentum, worked through six everyday examples.
Humanoid Robots in 2026: Which Ones Are Actually Working in Factories?
Plenty of humanoid robots look impressive in videos. Far fewer have done real, paid work. Here is what each company has actually shown, with the numbers behind it.
Movies
How to Spot Fake and Paid Movie Reviews
Scores on review sites and YouTube can be pushed up by paid critics or dragged down by review bombing. Here are the warning signs, and how the big sites try to stop it.
Ancient World
How the Maya Predicted Eclipses Without Telescopes
A table in the Dresden Codex let Maya astronomers predict solar eclipses for centuries. A 2025 study explains how it was built and how they kept it accurate.
Mathematics
The Algebra Mistakes That Cost Students the Most Marks
Most lost marks in algebra come from a handful of small, repeated slips, not from hard topics. Here are the most common ones, a quick check for each, and a study method backed by research.
Social Media
Organic vs Paid Social Media: A Break-Even Calculation for Small Businesses
Free posts are not free: they cost your time. This simple break-even method, using 2026 benchmark data, shows when organic social media beats paid ads for a small business, and when it does not.
Law
Why Most Bills Never Become Law
About 19,000 bills and resolutions were introduced in the last full US Congress. Only 274 became law on their own. Here is where the rest stopped, and why that is often by design.
Fitness
How Long Should You Rest Between Workouts? What the Research Says
Rest is when your body actually gets stronger. Here is what research says about rest days, rest between sets and the signs you need a break, in plain language.
Fitness
Can You Train for Strength and Endurance at the Same Time?
Lifting and running in the same week does not cancel out your gains, with one exception. Here is what the research shows, and a simple weekly plan that works.
Crypto
What Actually Backs a Stablecoin? How to Read the Reserve Reports
A stablecoin is only as safe as the money behind it. Here is what the two biggest stablecoins say they hold, what their reports really prove, and the warning signs to look for.
Physics
Watts, Joules and Your Electricity Bill, Explained Simply
Your electricity bill is a physics lesson in disguise. Learn what watts, joules and kilowatt-hours mean, and work out what each appliance really costs you.
