What it is
Quantum physics is the branch of science that explains how matter and energy behave at the smallest scales, such as atoms, electrons, and subatomic particles.
At this level, everyday intuition no longer works the same way.
How it works
Instead of having fixed, predictable outcomes, quantum systems behave probabilistically.
That means:
- Particles exist in multiple possible states
- We cannot predict exact outcomes, only probabilities
- The act of measurement determines the final result
Importantly, this does not mean “anything can happen”; it means outcomes follow strict mathematical probability rules.
Why it matters
Quantum physics is not just theoretical. It underpins much of modern technology, including:
- Smartphones and computers (semiconductors)
- Lasers
- MRI scanners
- Modern electronics
Without quantum physics, modern digital life would not exist.
Analogy
Imagine a spinning coin in the air.
Before it lands, it is not strictly heads or tails; it exists in a state of probability.
Quantum particles behave similarly, but are governed by precise mathematical laws.
