How a Smartphone Knows Up from Down (accelerometer)

48 Comments

1. Magic got it

2. anyone from 2022? 😀

3. I've just watched six of these in a row. I see Youtube recommended Homer Simpson at the buffet. I gotta take a break but I'll be back.

4. MEMS are incredible engineering.

5. Sir: I am watching your videos in awe. Your material is fascinating and you are engaging and fun to listen to. Bravo.

6. Wow man that was a good video

7. The accelerometer is used inside a car to detect the sudden impact or stop caused by an accident and then used to fire the airbags. More modern and advanced cars use several to detect where the impact came from and can tell the difference between hitting a wall dead on or getting hit in the side of the car. This can then change which airbags are triggered first.

8. Thank you!

9. For a second I thought it was going to be a Tim and Eric bit. Lol

10. 1:35 This is the accelerometer alignment when smartphone is in upright position. And the movement happens when smartphone moves on either landscape mode.

11. Today someone ask me about and the doubt about grew inside me. Thanks you I nos know the answer. Best regards

12. I truly truly truly appreciate this video. Thank you for sharing your expertise!

13. omg u saved my physics presentaion

14. Hi I'm from Vietnam :v

15. This guy should for office

16. an amazing service to the new generation by you. thanks for it
    It was so helpful

17. 🔥📱⏳🙏

18. wow that designing part is ……woffff

19. Come back we miss your videos 🥲

20. ask the average smart phone user how their phone knows up from down, and they will tell you it is magic, some will say black magic and others will say white magic, and some wouldn't care because their smart phone is much smarter then they are.

21. That was quite neat! I've always wondered how etching of microchips (in general) worked! Thanks!

22. Amazing!

23. u searched this don't u

24. 👁 👌

25. How is this guy not Verified?

26. I understood the title..

27. noice

28. I like the manner in which you explain stuffs. It's always interesting to watch

29. Thanks pal…now I realize just how common I really am.

30. That manufacturing process is very impressive… I'm amazed someone was able to figure that out

31. I didn't expect to find such a good video when I searched, now it's clear

32. 🙋hello

33. Very interesting🚬

34. Watching this masterpiece after 9 years.😂

35. Can you now tell us why FB is trying to take over the world?

36. "engineer's (pen) ink is holier than martyr's blood". hadith

37. Well, after watching this I bought your book.

38. The MEMS Gyroscope is even more interesting than the MEMS accelerometer. The MEMS gyroscope can't replace the accelerometer but works using similar ideas plus the addition of the Coriolis effect and a more complex design, if it's a 3-axis. The Coriolis effect is simple concept once fully understood but can be difficult to do so. It's a brain buster but eventually, you'll get that "eureka" moment

39. Post another video pleeaaseee

40. All of this and it can survive 4-6 years of 5+ foot drops

41. Grande il prof salemme

42. 0:29 스마트폰에 장착된 가속도계
    
    0:32 가속도계의 주요 파트
    
    – Housing(케이스)
    
    – Seismic Mass(스프링이 달린 무거운 금속 공)
    
    0:44 스프링이 얼마나 늘어났는지를 측정하여 중력을 계산할수 있다.
    
    0:53 xyz 축에 각각 가속도계를 장착하여 중력이 작동하는 축의 방향을 알수있다.
    
    1:18 스마트폰 가속도계

43. Thank you veritasium for letting me immediately recognize the accelerometer as a compliant mechanism

44. Ugh, I wish this channel still uploaded. Easily some of the best engineering and science explanations on YouTube.

45. Now i realize why im just a cabbie

46. How do I take mine out?

47. And yet it still doesn't work correctly

48. All you’ve done is prove Newton’s 3rd law and it’s implementation using hardware within the phone device.
    All connectivity can be disengaged on the phone.
    The phone will still apply the the implementation of Newton’s 3rd law.
    So you’ve implied it uses the the “force of gravity” which isn’t true.
    All that is being applied to detect the force on the accelerometer is density and buoyancy.
    The video is pseudoscience and the idea the mass attraction is real is complete nonsense.
    Our environment is electromagnetic and we tangibly experience buoyancy and density.

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