Fundamental Forces and Time Measurements

The video explores the concept of Planck time, the smallest measurable unit of time, and its significance in physics. It discusses various time scales, from seconds to zeptoseconds, and explains how Planck time is derived from universal constants. The video also touches on the implications of Planck time for understanding the universe, particularly in the context of the Big Bang and fundamental forces.

What is Planck Time defined as?

• The time taken for light to travel one meter

• The time taken for light to travel one Planck length

• The time taken for sound to travel one kilometer

• The time taken for light to travel one kilometer

How far does light travel in one second?

• 300 kilometers

• 30,000 kilometers

• 300,000 kilometers

• 3,000 kilometers

What is the approximate lifespan of a muon?

• 2.2 microseconds

• 2.2 milliseconds

• 2.2 nanoseconds

• 2.2 seconds

How many frames per second do our eyes refresh at?

• 10 to 20 frames per second

• 20 to 30 frames per second

• 30 to 60 frames per second

• 60 to 90 frames per second

What is the duration of a femtosecond?

• 10^-9 seconds

• 10^-12 seconds

• 10^-15 seconds

• 10^-18 seconds

What is the significance of a zeptosecond?

• It is the time taken for light to travel one meter

• It is the time taken for light to travel one kilometer

• It is the shortest time measured for a photon to cross a hydrogen atom

• It is the time taken for sound to travel one kilometer

Which of the following is NOT a fundamental force in the universe?

• Gravity

• Nuclear fusion

• Electromagnetism

• Strong nuclear force

What happens to the fundamental forces at Planck Time after the Big Bang?

• They become stronger

• They remain separate

• They combine into a single force

• They disappear

What is the Planck Epoch?

• The time when all stars were formed

• The time when the universe will end

• The time before the first Planck Time after the Big Bang

• The time when the universe was formed

How many Planck Times are there in one second compared to the age of the universe?

• More Planck Times than seconds in 10 universes

• More Planck Times than seconds in 10 million universes

• More Planck Times than seconds in 10 billion universes

• More Planck Times than seconds in 10 trillion universes