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Physics Girl

Are perpetual motion machines possible?

Season 1 Episode 11 | 5m 01s

A wheel that spins forever; a bird that never quenches its thirst; a clock that never stops ticking, an endless source of free energy. These are but the dreams of inventors striving to make perpetual motion machines, machines that can work forever without any energy input. Are these machines possible without violating the laws of physics? No.

Aired: 12/07/15
Extras
Watch • 7:55
Physics Girl
Exploding soda cans with electromagnets in SLOW MOTION ft Joe Hanson
Watch a soda can rip itself apart in a fiery explosion!
Episode: S1 E27 | 7:55
Watch • 6:09
Physics Girl
Why RED BUBBLES are impossible… or are they?!
Take a look at bubbles and you’ll see that they're actually missing colors!
Episode: S4 E30 | 6:09
Watch • 10:12
Physics Girl
I WAS THERE! How David Blaine flew helium balloons to the height of jets (and jumped)
I got invited to see David Blaine float 25,000 feet up in the sky!
Episode: S4 E29 | 10:12
Watch • 11:01
Physics Girl
Fact-Checking this Viral Bottle Trick
What is cavitation?
Episode: S4 E28 | 11:01
Watch • 12:19
Physics Girl
The Science of Ventilation
How likely are you to get sick on an airplane?
Episode: S4 E27 | 12:19
Watch • 9:00
Physics Girl
Insanely Fun DIY Science Experiments at Home
Fun DIY at-home science experiments.
Episode: S4 E26 | 9:00
Watch • 14:56
Physics Girl
Ballistic Ping Pong Ball vs. Tennis Ball at 450km/h!
What happens when you shoot a ballistic ping pong ball going 450kph at a tennis ball?
Episode: S4 E22 | 14:56
Watch • 9:52
Physics Girl
Unique At-Home Science Experiments!
Dianna from Physics Girl walks through 5 experiments.
Episode: S4 E24 | 9:52
Watch • 20:41
Physics Girl
Candid Interview with COVID-19 ER Nurse and Epidemiologist
ER Nurse Practitioner and Epidemiologist talk about their experiences with the pandemic.
Episode: S4 E23 | 20:41
Watch • 6:30
Physics Girl
HOME CHALLENGE: 20 Easy Experiments in 5 Minutes
Bored adult or a parent stuck at home during the coronavirus quarantine? Try this!
Episode: S4 E21 | 6:30
Latest Episodes
All
  • All
  • Physics Girl Season 4
  • Physics Girl Season 3
  • Physics Girl Season 2
  • Physics Girl Season 1
Watch • 7:55
Physics Girl
Exploding soda cans with electromagnets in SLOW MOTION ft Joe Hanson
Watch a soda can rip itself apart in a fiery explosion!
Episode: S1 E27 | 7:55
Watch • 6:09
Physics Girl
Why RED BUBBLES are impossible… or are they?!
Take a look at bubbles and you’ll see that they're actually missing colors!
Episode: S4 E30 | 6:09
Watch • 10:12
Physics Girl
I WAS THERE! How David Blaine flew helium balloons to the height of jets (and jumped)
I got invited to see David Blaine float 25,000 feet up in the sky!
Episode: S4 E29 | 10:12
Watch • 11:01
Physics Girl
Fact-Checking this Viral Bottle Trick
What is cavitation?
Episode: S4 E28 | 11:01
Watch • 12:19
Physics Girl
The Science of Ventilation
How likely are you to get sick on an airplane?
Episode: S4 E27 | 12:19
Watch • 9:00
Physics Girl
Insanely Fun DIY Science Experiments at Home
Fun DIY at-home science experiments.
Episode: S4 E26 | 9:00
Watch • 14:56
Physics Girl
Ballistic Ping Pong Ball vs. Tennis Ball at 450km/h!
What happens when you shoot a ballistic ping pong ball going 450kph at a tennis ball?
Episode: S4 E22 | 14:56
Watch • 9:52
Physics Girl
Unique At-Home Science Experiments!
Dianna from Physics Girl walks through 5 experiments.
Episode: S4 E24 | 9:52
Watch • 20:41
Physics Girl
Candid Interview with COVID-19 ER Nurse and Epidemiologist
ER Nurse Practitioner and Epidemiologist talk about their experiences with the pandemic.
Episode: S4 E23 | 20:41
Watch • 6:30
Physics Girl
HOME CHALLENGE: 20 Easy Experiments in 5 Minutes
Bored adult or a parent stuck at home during the coronavirus quarantine? Try this!
Episode: S4 E21 | 6:30