Learning Physics with Professor Mac Blog

Professor Mac is standing by his electronic drawing board with a screen behind him showing two blue circles explaining energy and work 0

Energy and Work – an Overview

In physics and engineering we use knowledge of a quantity called energy to understand nature and to design efficient machines and improve chemical processes. There are many different forms of energy. Some...

The model of Professor Mac's grey lifting vehicle is carrying a red shipping container towards the water 1

Modelling in Blender

I’ve been working for over a year on preparing models for a new Professor Mac video. My normal approach is to keep the modelling as simple as possible so that I may...

Does Earth accelerate towards you? Professor Mac is jumping from a step and the forces on him and on the Earth are shown by red arrows. 6

Does Earth accelerate towards you?

Does Earth accelerate towards you when you jump from a height? You may find it hard to believe but the answer is yes. You don’t see the acceleration since it is very small, but...

Professor Mac is stepping on to grey scales with two close-up pictures shown to the left. One of the scales shows his weight in kilograms and one in Newtons. 39

What do scales measure?

What do scales measure? The obvious answer is kilograms (or grams). That is what the reading on the scale indicates. However this is not what the scale is measuring. It actually measures force,...

Professor Mac is standing on a grey platform with a red arrow showing the pull of Earth acting on him 1

The force of attraction – Gravity

I’m working on the animation of Professor Mac demonstrating gravity. In the image above the gravity force acting on him is shown by the big red arrow and this is the force of...