@marmarjoon: Walter Lewin’s ability to draw straight dotted lines on the blackboard was the result of a precise combination of hand angle control, applied pressure, and understanding of skew behavior on the surface. By maintaining a specific skew at a set angle and applying uniform pressure, he could consistently control the width and spacing of the dots to create the desired visual pattern. Moreover, his deep understanding of physical concepts such as friction and motion helped him maintain continuous control over the skew and uniformity of the line. Although the exact details of his technique may vary, simultaneous mastery of angle, pressure, and friction played the key role in the accuracy and finesse of his dotted lines. #mathemathic #math #wiskunde #physics #Science

halfprize :

Another fun fact: Walter used to have a My Buddy doll in his office that scared the shit out of me every time I walked in. Most other facts about Walter aren’t fun.

dg :

Sounds like my dad snoring

JustMe :

A10 warthog

... :

Sound kinda like a fart

stockusername :

If you want to go down the chalk rabbit hole in academia look up Hagoromo chalk, this is a good doc on it https://youtu.be/PhNUjg9X4g8?si=YhZHjynLf1Mo_NGI

Freddie :

toolshed :

Imagine telling him he has to switch to dry erase

DJAzrael :

takes about 3 mins of practice to learn xD

Seethroughcanoetoo :

Man I feel like an awesome remix is just sitting there.

jemo_40 :

just "torrrrrrrrr" and lines gets drawn 😳😳

TALTON ATOMIX ⚛️ 256 :

Physics

『Y』 :

Stephen Brown :

worm calling

TheJ :

is this why my vacuum jumps on the carpet when I vacuum it?

Aiden :

we used to do this in japanese class instead of working and compete to see who would have the most consistent line

Milo ⟭⟬⁷ :

Happens when I file my nails

Raquel Barcelos :

drag com giz é novidade pra mim

milesfox :

satisfying like flicking the door stopper

Κωνσταντίνος :

Gattling 👌

Nick-Bee33 :

My stomach when I am hungry 🤤

eh___ok :

Just select the dotted line tool

Typing :

anachora tu hivi............ nachange course

gilbebor :

bbrrrrrrrrry burrrry wow iyo sound joh😂😂

Calvin The Great 001 :

Mwalimu wa maths hapo ni wapi🤣🤣🤣

(Chief) :

camera obscura 🥰