# What is the Heisenberg Uncertainty Principle? - Chad Orzel

## Important Vocabulary Words From The Video

Disturbances are any problems or events that cause chaos or disorder. They can be physical or psychological, but they all cause problems.

• The disturbances in the market caused prices to fluctuate a lot.
• The disturbances in the city caused a lot of crime.

To ripple is to cause waves to travel through a liquid or a solid. When you splash water on the ground, you're causing ripples to spread through the water.

• The splash caused a ripple in the pool.
• The wind rippled the surface of the water.

A trillionth of something is a very small amount. To say that something is a trillionth of something is to say that it is very, very small.

• The car is a trillionth of a mile away.
• The number of stars in the sky is a trillionth of a million.

The billionth is a number that is very large. It's equal to 1,000,000,000. This number is so large that it's impossible to say it with words.

• The billionth baby was born this week.

Wavelengths are the distances between one point on a wave and the next point on the same wave. They are measured in meters.

• The wavelength of the light is 565 nanometers.
• The wavelength of the sound waves is 20 hertz.

Momenta is Latin for "momentum." It is a force that is responsible for moving objects forward or backward.

• The momentum of the ball was carrying it toward the goal.
• The momentum of the car was carrying it forward.

To narrower something is to make it narrower or smaller. When you narrow a road, you make it so that cars can only go in one direction.

• The company is trying to narrower the competition by making it harder to get permits.
• The fabric is narrower than the standard size, which means that it's not very wide.

A physicist is a scientist who studies the physical world. They study things like atoms and particles, and the laws that govern them.

• He is a physicist, which is why he knows a lot about physics.
• She is a physicist, which is why she knows a lot about the physical world.