How Math Works: Inside 2 Mechanical Calculators
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- Опубліковано 20 сер 2024
- A look at the internals of the Brunsviga Model A and Marchant EEG9 mechanical calculators, as well as a brief description of how pinwheel calculators work.
Brunsviga Model A - introduced in 1894
Marchant EEG9 - introduced in 1927 (one of the most advanced pinwheel calculators ever made - after this Marchant switched to their silent speed proportional gear calculators. Other companies such as Hamann Manus made pinwheel calculators of similar complexity) - Наука та технологія
People in other videos gets so excited that they dont exaplain in order..But u explained calmly
All my life i have facinated about the mechanical calculator...Thank u very much ..this video gave me the primary ideo cleary and neatly...i now understand that it is all about design a complex maschine that registers number as pins
fascinating, good source of learning mechanical engineering and maths
That division was pretty cool! It's just sequential subtraction but to be able to just press a button and have it done an accurate is an awesome accomplishment for that day!
I had torn into some mechanical ⚙️ calculators back in 1983. I do not remember what year they were from. I assume they were newer, because the case was plastic. They were very interesting 🧐, as I tore them apart. They were electric ⚡️. Out of these two mechanical ⚙️ calculators I was given, I removed the two strong 💪 permanent magnets 🧲 out of each. Your friend, Jeff.
I can't even begin to figure out how the hell someone was able to construct this.
A computer is basically that. A bunch of gears communicating. The only difference is that a modern computer has billions of tiny gears.
Fascinating, thank you for making this video!
That's some amazing engineering right there, thanks for this video!
Holy fuck the engineering of the first one is brilliant
Oooh that EEG looks gorgeous. Enjoy.
Thank you for your patient demonstration.
Wtf why it is so less views ...😢
It's very interesting video ...
Thank you sir .....
3:27 To subtract, you just turn the crank the other way.
Best sir , you are really a hero.
Considering that the second machine has only one motor and it needs to run multiple different gears, it would have been interesting to know how it changes which gears it rotates. The speed of division suggests that it's running the gears pretty fast and if the mechanism wasn't robust enough, you'd quickly see parts of gears flying around when that motor turns. It sounds it has some of free wheeling setup where the motor inertia is released to spin freely with gears detached at the end of computation.
You can check out my video series on Marchant EA repair, its a similar calculator and although it doesnt do automatic division it has the same geartrain and the same reversing mechanism for changing between addition and subtraction. In that series I dissassemble and rebuild most of the calculator, and you can get an idea of the drivetrain and how it all works. In short though, it disengages the motor drive with a dog clutch which locks the main mechanism from turning but allows the motor and input drivetrain to freewheel
Very cool!
11k views in 3 years for an interesting video describing a fascinating machine. If it had some sexy girls twerking it would had millions of views.
Yeah, I have many videos about explaining/repairing mechanical calculators, and this is my most popular by far. There just doesnt seem to be that much interest
Does the second one have a turbocharged model?
Nice
You missed the opportunity to show division by zero.
Its not very exciting, the counter just increments forever
thanks for sharing bss1250
Dimag ka mute ho gaya ree...