Are all forces illusions?

What is a force ? Is gravity a "real" force ? And what is the origin of contact forces ? All these answers in 14 minutes !

0:00 - Introduction
2:00 - Inertial forces
4:12 - Gravity
7:57 - Contact forces
8:56 - Fundamental interactions
11:52 - Conclusion

And if you liked this video, you can share it on social networks !

Alessandro Roussel,

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To learn more :

[ScienceClicEN]

A little sidenote about virtual particles "playing catch" :

[RazorbackPT]

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This is my first time understanding why gravity can be thought of as a form of acceleration. The idea that massive-objects push outwards into shrinking spacetime is mind blowing. Thank you.

[topcraft]

I really appreciate that you pause for like 3 seconds after some sentences to let the information sink in.

[DaAwsumDude]

Gravity being described as an inertial force blew my mind. I’m loving the new diagram depicting gravity.

[IM-breb]

The explanation of earth accelerating outwards is mind blowing!!!

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[michaelransom]

By far one of the most intuitive explanations of forces i've ever heard. I'm quite impressed at how well you were able to describe force carriers and general relativity without having to resort to false approximations.

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