Dr Doyle's Physics Advent Challenge 2025

Solve a new physics problem each day of December!

Day 1

Your Answer:

Congratulations on completing the Physics Advent Calendar!

You've explored the wonderful world of physics through 24 challenging problems.

Happy Birthday Sir Isaac Newton! (Yes, he actually was born on Christmas Day 1642! {According to the Julian Calendar used in Britain at the time})

May your holidays be filled with wonder, discovery, and the joy of understanding the universe!

🔒

Door Locked

A new door on the calendar is unlocked every day of December.
You have unlimited attempts to get the correct answer.
Every correct answer you submit will earn you a decoration for the Christmas tree.
You don't have to be perfectly exact! There is a small tolerance built in to allow for rounding.
After 3 failed tries you'll get a helpful hint.
Your progress is automatically saved in your browser's local storage, so you can come back anytime and pick up where you left off (unless you switch browsers or devices or clear your browser's cache)