སྒྱུ་རྩལ
མཛེས་སྡུག་དང་བདེ་ཐང
བཟོ་རིག
རིག་གནས་དང་ལོ་རྒྱུས
དགའ་སྟོན
ཁོར་ཡུག
ཟས་དང་བཏུང་རྫས
ཕྱིར་འཕྲུལ་རིག
ཚན་རིག
རྩེད་འགྲན
རིག་རྩལ
གྱོན་རུང

Mathematics

བིལུ་པིརིན་ཊི ༤༤ ཡོད

བིལུ་པིརིན་ཊི (༤༤)

The Cantilever Bridge

The Cantilever Bridge

Mark གྱིསFI

Mathematics

The Theodolite

The Theodolite

Astro གྱིསIS

སྐར་ཚད་རིག

Vernier Caliper

Vernier Caliper

Mark གྱིསFI

འཕྲུལ་རིག

༡༥
Bevel Protractor

Bevel Protractor

Mark གྱིསFI

Mathematics

༡༧
Cloverleaf Interchange

Cloverleaf Interchange

Mark གྱིསFI

Mathematics

༢༢
Hollerith Tabulator

Hollerith Tabulator

Mark གྱིསFI

རྩིས་འཕྲུལ

༡༩
Burroughs Calculating Machine

Burroughs Calculating Machine

Mark གྱིསFI

ཚན་རིག

༡༧
Cash Register

Cash Register

Mark གྱིསFI

ཚན་རིག

༢༥
Slide Rule

Slide Rule

Emma གྱིསSE

ཚན་རིག

༢༠
Perspective Frame

Perspective Frame

Mark གྱིསFI

ཚན་རིག

༢༠
Self-Working Card Trick

Self-Working Card Trick

Mark གྱིསFI

ཤོག་འཛར་རྫུ་འཕྲུལ

༡༩
Volvelle Wheel Chart

Volvelle Wheel Chart

Mark གྱིསFI

མཆོངས

༣༧
Monochord

Monochord

Penny གྱིསDK

སྒྲ་རིག

༢༡
Zero and Place-Value — Build an Abacus and Count Like the World Does

Zero and Place-Value — Build an Abacus and Count Like the World Does

Mark གྱིསFI

བར་དུས

༢༥
Projectile Motion — Launch a Ball and Measure Its Flight

Projectile Motion — Launch a Ball and Measure Its Flight

Penny གྱིསDK

Scientific Revolution (1600–1760)

༡༩
Hooke's Law — Stretch a Spring and Find Its Stiffness

Hooke's Law — Stretch a Spring and Find Its Stiffness

Penny གྱིསDK

School Projects 11-15

༢༡
The Pendulum — Time a Swing and Weigh Gravity

The Pendulum — Time a Swing and Weigh Gravity

Martin གྱིསNO

Scientific Revolution (1600–1760)

༡༨
The Sand Reckoner — Count the Grains and Tame Huge Numbers

The Sand Reckoner — Count the Grains and Tame Huge Numbers

Mark གྱིསFI

སྔོན་རབས

༢༡
Air Has Weight — The Upside-Down Glass and Torricelli's Barometer

Air Has Weight — The Upside-Down Glass and Torricelli's Barometer

Penny གྱིསDK

Scientific Revolution (1600–1760)

༢༢
Magic Squares — Arrange Numbers So Every Line Adds the Same

Magic Squares — Arrange Numbers So Every Line Adds the Same

Mark གྱིསFI

སྔོན་རབས

༡༥