It is confirmed, Prof Kearns was the first to come up the idea of intermittant blinking. www.newyorker.com/magazine/1993/01/11/the-flash-of-genius

"The reason we are unconscious of our blinking" - immediately becomes conscious of my blinking.

Every time I watch one of your videos, my respect for engineers of yesteryears goes up by another notch. Thanks for telling us about the geniuses who behind the things we take for granted.

Watch the movie "flash of genius" to understand the whole story. Its amazing to see how much pain he endured to finally win the legal battle where interestingly he represented himself against ford's lawyers. This thing broke his family, and marriage too.

6:31 If the cam mechanism involves worm gear (input), then I'm wondering how can the inertia of the wiper (output) drive the cam mechanism.

If memory serves, the other significant thing to come from this was the 555 timer chip, on of the most versatile and common controller chips on the market to this day.

Absolutely hilarious how electronic wipers are shown as being controlled by a GPU

It's unbelievable how complex but simple the technology is we take for granted. Especially before rain sensors were a thing.

2:53 my braincells died trying to understand the physics behind wipers moving completely out of sync with their support shaft 😷

7:03 never knew wiper blades were powered by a gigabyte RTX 3090

Standing Ovation For the Geniues Profferssor Robert Kearns......Respect from INDIA.

Very informative. It goes to show how the big companies can try to bully the little man by tying up issues in the courts indefinitely to exhaust the little man's ability to fight.

There is a theory called Johnson, Kendall and Roberts (JKR for short) theory in soft material contact mechanics in the field of solid mechanics. This subject is taught in the undergraduate mechanical engineering courses. This extremely accurate theory of a soft compliant material coming into contact with a hard and smooth surface under loading is explained in detail with mathematical formulas. The professor who taught this course in college told the class that the theory was developed specifically at the behest of big car companies to solve this exact problem of car wipers made up of soft rubber (compliant) making contact with a hard smooth surface (glass).

Some car wipers from the mid 20th century weren't electrically powered at all. They were powered off the engine intake vacuum; when the accelerator pedal was depressed (such as when driving uphill) the wipers would stop operating altogether.

The old style wipers were not that bad. I remember vacuum-operated wipers, the wipers would speed up/slow down depending on the speed of the vehicle.

Professor Robert Kearns is a genius and a legend

Wow, back-2-back two videos This shows your hardworking nature KEEP IT UP 😊😊😊😊😊

I like the lesson you're teaching, but I'm annoyed that the things you animated weren't mechanically accurate. At 2:10 the animation showed impossible movements. In fact, none of the linkages you showed behave that way, with the wipers moving without being mechanically coupled to the movement of the linkage, sweeping a different angle, or in a different direction. 2:10 also doesn't show any way for the linkage to follow the cam follower back. You've modeled far more complicated things accurately; I am disappointed that this one gave up on accurately representing the mechanism of these wipers. Even the first link in the linkage shown from 2:10 onward is visibly stretchy (the first one from the cam follower). What's up with that?

I recommend the movie "Flash of Genius" with Greg Kinnear. It tells the story of the court battle. You'll never trust a big company again after you see that.

Simple observation can lead to amazing inventions Point to be noted

06:33 How can the momentum of the wipers be transmitted in reverse direction to the motor through the worm gear? This doesn't make sense for me

I love how you take us on the journey of discovery. Thank you.

7:02 : I have a RTX 3090 in my car ? Time to open the dashboard

These things are usually well animated, but in this one the motion of the wipers bears little relation to the motion of the mechanism driving them.

Most people see a problem and complain. An inventor sees a problem and finds a solution.

I’m surprised that this video didn’t mention the really good movie made about Robert a Kearns played by Greg Kinnear. Good but sad with his legal battles for so long. None the less this is another great video on how stuff works. It’s also amazing to me how no one else came up with this, unless Robert Kinnear developed one of the circuits used. Maybe it was just at the very start of using circuits?

*I LIKE how the lad always says "HOWEVER".*

7:03 "The dwell time can be accurately measured and changed using timer circuits and microcontrollers." **Inserts RTX 3090**

Mary Anderson, an inventor, was the first person to create an "effective windshield wiper".

زبردست جناب

I've never thought car wipers could be soo interesting. Well, the more you know.

Great Engineering! It was not expected from Such a MNC like Ford

7:03 ahahah Nvidia GA102-300-A1 by Gigabyte ... GeForce RTX 3090 for car wipers :) You made my day mate !

Really brilliant engineering👌👌

There was a documentary movie about Professor Robert Kearns, and his invention of the intermittent wiper circuit he invented, how Ford stole his idea, and eventually every auto industry today uses his idea. The movie "Flash of Genius" tells how he went thru hell trying to sell his invention to Ford and eventually they stole his idea. He eventually won a lawsuit 10 to 12 years later against Ford as well as Chrysler and GM who eventually incorporated the same intermittent wiper idea in all their cars and trucks.

The power from motor goes through worm gear, than how should wipers inertia will rotate the cam. As I know worm wheel arrangement can only work in one direction.

Prof Kearns was not the inventor of the windshield wiper. He invented the " intermittent wiper system" A woman, whose name escapes me, invented the windshield wiper many years beforehand.

Early designs for the windscreen wiper are credited to Polish concert pianist Józef Hofmann

thanks for your hard work

Wow great information about viper

Damn something so simple we all take for granted has so much thought and genius in it. This guy was cool 😎

2 animated video in 1 day great man

Very informative thanks

😳 wow, even without microcontroller . This is really amazing

very nice explaination sir love you

Another big improvement in car windshield wipers was the change from using engine intake manifold vacuum to run the windshield wipers to an electric motor to run the windshield wiper. Those engine vacuum powered windshield wipers had a big problem. When the driver was climbing a hill and had to step on the gas, the windshield wipers would slow down to almost a full stop. Then when the driver let their foot off the gas pedal the windshield wipers would speed up dramatically. An electric motor eliminated all these speed variations.

brilliant engineering❤

Love this channel!

Anyone would have thought about it in today's world.

What a detailed animation, even duracell battery is present as it was back then

Great information , thank you

Beautiful animations.

Expecting more technical works behind automotive industry... Continue...

Forget about comments about historical accuracy and all. I think you did a great job of animating the mechanism and showcasing it to us. "An electrical circuit timed/controlled by mechanical switch" - great idea indeed!

Wow, absolutely Genius.

Amazing.... ❤❤❤

Amazing invention in engineering.

7:03 did any one notice graphic card 😂

If the wipers continue and skip any resistance while the cam is active because of inertia, how does this mechanism ever deactivate when the wipers are slowed down, except for the wiper being turned off completely and started slow again.

Beautiful ly explain ed

Amazing!

Amazing 😮

Thanks!

thank you sir

Awesome sir🤘

The wipers in the 1955 Chevy pictured would actually rotate in opposite directions, as would those most cars before the 1960s.

Very informative .... Lots of Love From KASHMIR 🕊️

I hope he was fairly compensated and not just court costs and lawyers' fees.

Won the case Proceeds to blink in slow motion

Thanks

Very nice, really liked it.

This is great! May you make video on car electrical system and wiring. thanks

very very good idea ♥️

Professor Kearns may have been a genius but his hypothesis about why our blinking does not interupt vision is wrong - it is not related to the rest period. Studies show that the brain seems to have a far more complex way of dealing with the 'off' period which occurs as the eyelid sweeps across the visual field. The most likely answer is that the brain 'knows' that the eyelid is in the way and either invents an image based on what occured just before the sweep started or simply remembers what existed before the sweep and holds that image during the 'off' time. It may also be related to the microsaccadic which is continually occuring in our eyes. These small eye movements are essential for the brain to be aware of what is happening in the visual world. Our retinal cells fatigue extremely quickly if they see a contiuous input - which is why if you hold your eyes in one spot for any length of time the image will start to fade. In order to overcome this the eye constantly performs small movements in order to refresh the signal falling on any given neuron. However, we are unaware of this movement becuase our brain integrates the signals over time and smoothes what would otherwise be a jerky image. The problem of the eyelid sweeping across the eye may be resolved by the brain using a combination of all of the above but, either way, Prof Kearns was wrong.

Proud of you man

nice Duracell advertisment, i subconsciously went to the supermarket and bought myself a pack of Duracell 😂

Just think, Tesla has patented a rail guided wiper system. Simplicity to complexity. Imagine what snow and ice will do to this California based design.

Now I can't stop blinking 😅

The movement of wipers (silver) and shafts (black) make no sense in the animation. Also the motors rotation speed is very irregular. This does not explain the design well. 0:04, 2:12 ...

Blinking fast still probably would be easy to get used to. Try it. If anything, the sensation of the actual eyelids moving will be what will bother you, rather than how fast you blink

Very interesting 👍

Very nice

Didn't understand later part of video but felt good watching 😂

I really need a car wiper to save the earth from erosion

No words sir ❤️

i have to say thanks very match

Hello sir Thank you for your support Can you explain how auto stop function is controlled by wiper motor ?

3:39 "current flow stops in the circuit" yet the bulb is still on.

Thank you 😊 lods

Knowledgeable facts

Amazing people

Oh yes the ones that never matches the rain, and needs continuous adjustment...

Big fan sir

Jai Hind 🇮🇳🚩, awesome dude, your videos are 🤩🤩💞, keep creating, we support you💯💯🤘👍

brilliant engg idea.

I can never figure out how the ship hms warrior telescopic funnels work and the mechanism behind it i would love to see a vid on this ps i love the vids on this channel

They need to bring back vacuum operated wipers

I like how the movement od whipers at 0:40 doesnt match the four bar linkage

Please make videos on how exactly the haptic technology works.

Thank you lesics. My first video on your channel is based on Hover Dam. I Love it so much. Keep it up dear sir. My father is also a civil engineer. Hope one day you'll achieve your Red Diomand button from KZfaq channel soon 💐. Love you Sir from India. Where are you from? I don't know, sir?