結果 : bifocal glasses inventor
0:27

Benjamin Franklin Invented The Bifocal Glasses

Fusion Theory
1,731 回視聴 - 7 か月前
0:08

Benjamin Franklin invented bifocal lenses.

Enjoyable Walks
193 回視聴 - 2 年前
0:15

May 23, 1785: Benjamin Franklin announced his invention of bifocal glasses.

TechSavvy Channel
68 回視聴 - 1 年前
0:26

Bifocals - American Inventions #bifocal #glasses #inventions

7k Metals
170 回視聴 - 10 か月前
0:35

Invention Of Bifocal Lenses By Benjamin Franklin | Invention By Founding Father Of America

Travel Thoughts
1,255 回視聴 - 1 年前
1:52

Inventor of the Zcifi Stick-on Bifocal Lens

AddOnReaders by Zcifi
947 回視聴 - 8 年前
0:24

Bi Focal glasses invented #fact #history #interestingfacts #dailydose #benjaminfranklin #bifocal

Facts 365
641 回視聴 - 4 か月前
0:18

Evolution of the Bifocal Eyeglasses - May 23rd #bifocal #shorts

Abd Alrhman Al Darra
181 回視聴 - 1 年前
0:12

Which US president is credited with inventing bifocal glasses?

Knowledge Stimuli
276 回視聴 - 5 か月前
0:59

HOW we MADE these BIFOCAL GLASSES!!! #shorts

Eyespecs
24,999 回視聴 - 1 年前
0:12

||Who invented Bifocal lens || #facts #shorts

FACTS YOU MUST KNOW 👍
771 回視聴 - 2 年前
0:59

Benjamin Franklin invented eyeglass lenses using only AI voice

VMOAM AI Historian
28 回視聴 - 10 か月前
0:37

#shorts/who invented bifocal lens/viral||@Fact Magnet YT|

Fact Magnet YT
88 回視聴 - 3 年前
0:15

How spectacles were invented 👓 #sciencefacts #lenses #animation

IFLScience
612 回視聴 - 1 年前
2:18

Zcifi Stickon 遠近両用メガネの発明者が安全ゴーグルの作り方のヒントを提供

AddOnReaders by Zcifi
1,251 回視聴 - 8 年前
0:48

The Evolution of Glasses: From Italy to America #Shorts #Glasses #EyewearHistory

InventiveSwirl
437 回視聴 - 2 か月前
0:06

Benjamin Franklin was not only a statesman... #history

History lessons learned
2,522 回視聴 - 1 年前
0:33

wearable eyeglasses #history #food #eyeglasses

EpochTalesMini
24 回視聴 - 6 か月前
2:23

ベンジャミン・フランクリン |二重焦点レンズの発明 |検眼の歴史

Contact Lens King
6,374 回視聴 - 5 年前
0:24

Who invented Bifocal Lens? #generalknowledge #quiz

General Knowledge Shots
7 回視聴 - 2 か月前