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 Соглашение Приватность FAQ

Cabinet Get premium

Donate

25 апр 1879 г. - Thomas Edison

Описание:

Invented lightbulb, and electricity effects people's natural melatonin and seasonal sleep patterns

Добавлено на ленту времени:

History of Sleep study

ByK

9 окт 2018

0

0

410

Дата:

25 апр 1879 г.

Сейчас

~ 146 г назад

About & Feedback Соглашение Приватность FAQ

Cabinet Get premium

Donate

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

Secured with SSL