41
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
May 31, 2026
850711
70597
2
Create a timeline
Public Timelines
For organizations
For companies
For educational institutions
For teachers
For students
Dashboard
For educational institutions
For teachers
For students
Dashboard
FAQ
Close
Create a timeline
Public timelines
FAQ
About & Feedback
Terms
Privacy
FAQ
Support 24/7
Dashboard
Get premium
Donate
jan 1, 1856 - 1856 Helmholtz published the first volume of "Handbook of Physiological Optics"
Added to timeline:
Important dates in psychological history
By
Natasha Gualy
7 Mar 2018
0
0
880
Date:
jan 1, 1856
Now
~ 170 years ago
About & Feedback
Terms
Privacy
FAQ
Support 24/7
Dashboard
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL
