Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

Create a timeline

Public timelines

About & Feedback Un accord Confidentialité FAQ

Cabinet Get premium

Donate

7 oct. 1930 - Overhead Projector

Description:

Device that projects an enlarged image of a transparency sheet placed on it onto a screen, board, or wall in the classroom.

Ajouté au bande de temps:

Edu 141 History of Technology Timeline

4 déc. 2017

0

0

415

Date:

7 oct. 1930

Maintenaint

~ Il y a 95 ans

About & Feedback Un accord Confidentialité FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL