33
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 30, 2025
430032
35893
2
Create a timeline
Public Timelines
For education
For educational institutions
For teachers
For students
Cabinet
For educational institutions
For teachers
For students
Open cabinet
FAQ
Close
Create a timeline
Public timelines
FAQ
About & Feedback
Terms
Privacy
FAQ
Support 24/7
Cabinet
Get premium
Donate
oct 23, 1902 - The phase-contrast microscope was invented
Added to timeline:
Microscope
By
Tash
13 Dec 2017
0
0
361
Date:
oct 23, 1902
Now
~ 123 years ago
About & Feedback
Terms
Privacy
FAQ
Support 24/7
Cabinet
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL
