Public Timelines

For companies For educational institutions For teachers For students Dashboard

For educational institutions For teachers For students Dashboard

Create a timeline

Public timelines

About & Feedback Terms Privacy FAQ

Dashboard Get premium

Donate

jul 17, 1921 - Электрет

Description:

диэлектрик, помогающий в работе микрофона

Added to timeline:

История создания микрофона

ByЮля Мухамеджанова

23 Oct 2018

0

0

430

Date:

jul 17, 1921

Now

~ 104 years ago

Images:

About & Feedback Terms Privacy FAQ

Dashboard Get premium

Donate

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

Secured with SSL