-
5th-4th Centuries B.C
-
-
-
-
however, the image required eight hours of light exposure and later faded.
-
the first image that was fixed and did not fade and needed under thirty minutes of light exposure.
-
-
-
images required only two or three seconds of light exposure.
-
-
-
-
-
-
-
Want to make a timeline like this?
Use Timetoast to turn dates, events, milestones, and phases into a clear visual timeline you can build and share. Timetoast is a timeline maker for work, school, research, and stories.