I didn't believe that light slows down in water (part 1)

TL;DR

The video explores the common misconception that light slows down in water and experiments with LiDAR technology to test the speed of light in different mediums.

Transcript

This video is about an experiment  I've wanted to do for years and   the unexpected result I got when I did it. Have you ever had a simple question ruin your life? Of course you have, right? Like, it's perfectly normal to spend months and months doing nothing else but obsessing over a question that no one else cares about. Like, does light actually... Read More

Key Insights

• 🐎 The speed of light is often referred to as the maximum speed of causality, indicating how quickly one thing can affect another.
• 🙂 Light behaves as both a particle and a wave, with its purpose being to interact with charged particles and produce forces.
• 🙂 Light's speed in water does not actually slow down; however, phenomena such as wavelength changes and light bending can give the illusion of light slowing down.

Questions & Answers

Q: Why did the creator decide to investigate whether light slows down in water?

The creator had always doubted the commonly accepted notion that light slows down in water and sought to find a way to accurately measure the speed of light in different mediums.

Q: What are some common explanations for light slowing down in water that are debunked?

The video debunks the explanations of light absorption and ricocheting off molecules as causes for light slowing down in water, as they do not align with observed behaviors of light.

Q: How does the creator attempt to measure the speed of light in water?

The creator uses LiDAR technology in their phone to measure the time it takes for light to travel through a container of water and bounce back. This data is used to calculate the speed of light in water.

Q: What challenges does the creator face during the experiments?

The creator faces difficulties in obtaining accurate measurements with the phone's LiDAR technology, including issues with detecting surfaces and incorrect readings.

Summary & Key Takeaways

• The creator explores the question of whether light actually slows down in water and sets out to find the answer using LiDAR technology.

• Common explanations for light slowing down in water, such as absorption and reflection, are debunked as incorrect.

• The creator conducts experiments with their phone's LiDAR technology to measure the speed of light in water, but faces difficulties in obtaining accurate results.