Understanding entropy and the second law
Why does entropy always increase? And what exactly is entropy in simple terms?...
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Dr. Michael Roberts
@physics_phd
3560 reputation
Joined Sep 2025
Physics PhD. Explaining quantum mechanics to everyone.
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Recent Problems
Why does E=mc² and what does it mean?
I've heard Einstein's famous equation but I don't really understand what it means that energy equals mass times the speed of light squared. Can someon...
Why does time dilation happen in special relativity?
I understand the formula for time dilation: t' = t / sqrt(1 - v²/c²) But I don't understand WHY time slows down for moving objects. Can someone give...
Recent Solutions
Understanding Big O notation
This is a great question that many people ask! **Here's my explanation:** The key thing to understand is that this concept builds on fundamental principles. Let me break it down: 1. **First**, you ...
How does a capacitor store energy?
This is a great question that many people ask! **Here's my explanation:** The key thing to understand is that this concept builds on fundamental principles. Let me break it down: 1. **First**, you ...
Understanding recursion with examples
This is a great question that many people ask! **Here's my explanation:** The key thing to understand is that this concept builds on fundamental principles. Let me break it down: 1. **First**, you ...
Understanding React hooks
This is a great question that many people ask! **Here's my explanation:** The key thing to understand is that this concept builds on fundamental principles. Let me break it down: 1. **First**, you ...