Ever wondered how your phone screen lights up, why your cereal usually stays in the bowl when you walk with it, or how planets manage to stay in orbit? Yes? No? Even if the answer’s no, I’m still going to tell you why: physics.

The Big Question: What Is Physics?

Physics is the branch of science that studies matter, energy, and the laws that govern how they interact. It asks and answers questions like:

• Why do things fall?
• How do objects move?
• What is light made of?
• Can time actually bend?

If biology is the study of life and chemistry is the study of substances and reactions, then physics is the study of everything: from the tiniest particles to the largest galaxies.

What Do Physicists Do?

Physicists ask questions, make observations, and create models to explain how the world works. They:

• Form hypotheses
• Test them through experiments
• Analyze the results
• Develop equations or laws that predict outcomes

This is the scientific method. Every science uses it, but physics uses it to uncover the most fundamental rules of reality.

Measurements

Imagine baking cookies without measurements: “Add some flour. Bake until it seems done.” That would be chaos. Physics is no different: precision matters.

That’s why scientists use the SI system of measurement:

• Length – meters (m)
• Mass – kilograms (kg)
• Time – seconds (s)
• Temperature – Kelvin (K)
• Electric current – amperes (A)

You’ll also run into terms like significant figures and uncertainty. These aren’t there to intimidate you, they’re just about being honest with how exact your numbers really are.

Physics = Math + Logic + Wonder

A lot of people panic at the mention of math in physics. But math is just a language, a way to describe the patterns of the universe. Musicians use notes, artists use brushstrokes, and physicists use equations. You don’t need to be a genius to study physics. You just need curiosity and the willingness to think carefully.

Why Should You Care?

Physics is more than equations on paper. It’s the foundation for:

• Designing new technology
• Understanding how rollercoasters keep you safe
• Exploring space and the future
• Building inventions that change the world

Even if you don’t become a scientist, physics shapes how you think. It teaches problem-solving, logical reasoning, and creativity. It helps you look at the world in a completely new way.

In this course, you won’t just solve equations, you’ll solve mysteries. You’ll explore motion, energy, light, electricity, and even time and space.

So get curious. Please. Ask questions. Test ideas. Drop things. Measure everything.

Because physics isn’t just for scientists. It’s for literally anyone who’s ever looked up at the stars and asked: How does it all work?