How Flexible Machines Could Save Is Our Food Becoming Less Nutritious? 4 months ago   12:52

Veritasium
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I visited the Compliant Mechanisms Research group at Brigham Young University and spoke to Professor Larry Howell:
https://www.compliantmechanisms.byu.edu

At the above link, you can download 3D-print files to make some of the objects in the video, plus learn more about compliant mechanisms.

What I learned about compliant mechanisms I summarize in the 8 P's of compliant mechanisms:

1. Part count (reduced by having flexible parts instead of springs, hinges)
2. Productions processes (many, new, different enabled by compliant designs)
3. Price (reduced by fewer parts and different production processes)
4. Precise Motion (no backlash, less wear, friction)
5. Performance (no outgassing, doesn't require lubricant)
6. Proportions (reduced through different production processes)
7. Portability (lightweight due to simpler, reduced part count designs)
8. Predictability (devices are reliable over a long period of time)

Special thanks to Patreon supporters:
Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd

Animation by Alan Chamberlain

Comments 2727 Comments

azonicrider32
I wasn't fooled by the elephant.
I design suspension systems. :)
Jaytax - Funny Gaming Videos
Everytime I see the thumbnail for this video - I think the first spoon is the girlfriend riding her arm-less boyfriend while choking him.
mattymckers
PROCESSEEEEEEEZ @ 7:26
Mazoureoursky
talkin about machines and jammin in 'better' ? are you high on silicone borther.
Penguinator
Marry Physics Girl already.
clutch2827
Why does the thumbnail look like someone being strangled?
Try4Hard
So the iPad Pro (2018) is better if it is bend?
KJER ERRT
U KNOW THESE BENDING MECHANISMS TEND TO BREAK OVER THE TIME/CERTAIN NUMBER OF CYCLES JUST LIKE THE SKIP BUTTONS IN MY AIWA CD PLAYER BROKE MANY YEARS AGO BECAUSE THEM AND THE SPRINGS WERE ONE PIECE OF PLASTIC.
KJER ERRT
THE MACHINES THAT BEND OVER BACKWARDS ARE EVEN MORE EFFICIENT
Dave Sherwood
I'm not sold on this idea yet, metals will eventually fail from fatigue, imagine this happens just as the ISS has turned its thrusters away from the sun? On the other end of the scale, we've been using fibre optic cables for decades already, they also flex and break from fatigue but still work?
Matches !
How to broken glass sound affect in Minecraft was created 7:59
Talal Khan
The thumbnail looked like an Aphex Twin logo.
Philippe Nachtergal
Wouldn't that the one nuclear weapon technology that you do want to give to other countries ? "How not to arm your weapon by mistake"
bausHuck
Such an interesting episode. I wonder if a motor for a car could be made with these ideas. Making cars cheaper and having less wear and tear on them.
AceGamingProductions
That thing that expands under certain speeds blew his mind... but mechanical advance distributors have been working using the same principle for decades. Nothing ground breaking there, just that they can now make it with one piece instead of multiple.
ward janssen
The thumbnail made me think it was an Apex Twin song for a moment.
LogiForce86
Why not to use at least the big plastic items (especially as a mass product)...
1. Plastic soup is already an issue
2. Plastics go brittle with age and thin hinging parts are quickly prone to fail, which...
3. Makes this a throw away item which again adds to 1.

At least metal vice grips can be recycled by melting it and reusing that metal.
I am sure it can have an application and research should be done, but I am against using plastic as a mass product due to the pollution it causes to the planet.
JupiterHollow
iPhone 6 niggas be like
MarkdaMerk
"What doesn't bend only breaks ( ͡° ͜ʖ ͡°)"
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Is Our Food Becoming Less Nutritious? How Flexible Machines Could Save 4 months ago   07:30

The nutrient content of food is declining. Is it because of soil depletion, selective breeding, or... something else?
Watch my new documentary, VITAMANIA: http://ve42.co/vita

I came across this story as I was making the film Vitamania. When you ask sellers of vitamins why you should take vitamin supplements even if you eat a healthy diet, they will say because our food doesn't contain all the nutrients it once did. This is supposedly due to soil depletion, cold storage, food ripening off the vine, and global transport of out-of-season foods. And to an extent this is true. Foods contain the greatest amount of nutrients if they are eaten soon after they are harvested. An unexpected source of nutrient decline is the increasing amount of carbon dioxide in the atmosphere. It causes plants to grow faster and bulk up on carbs but at the expense of other nutrients, so in percentage terms the amount of nutrients are actually declining. For now this decline is modest so supplementing with vitamin pills is probably unnecessary for most people with a healthy diet but it may be a concern in future.

Thanks to Kate Pappas & Chris Kamen for writing, producing and filming this video with me
Edited by Lucy McCallum
Sound mix by Wayne Hyett
Fact Checking by Calvin Lee and Claire Smith
Thanks to the Collingwood Children’s Farm and Glenn Fitzgerald from the University of Melbourne & Agriculture Victoria

Further Reading:

https://www.sciencedirect.com/science/article/pii/S0889157516302113
https://www.ncbi.nlm.nih.gov/pubmed/15637215/?ncbi_mmode=std
http://soils.wisc.edu/facstaff/barak/poster_gallery/minneapolis2000a/
https://www.politico.com/agenda/story/2017/09/13/food-nutrients-carbon-dioxide-000511
http://www.abc.net.au/news/2018-05-24/scientists-warning-rice-may-become-less-nutritious/9792822