Copepods, Stentors, Milk Drops, Eric Newman
HEE-FV-050
- Date:
- 1958
- Location:
- Belmont Pond MA; MIT laboratory, Cambridge MA
- Image(s):
- Black & White
- Sound(s):
- Silent
- Maker:
- Harold E. Edgerton
- Film type:
- 16mm, Kodak positive print
- Run time:
- 05:12
- People:
- Eric Newman, Harold E. Edgerton
Harold E. Edgerton demonstrates the techniques of high-speed silhouette photography to examine living freshwater organisms under a microscope. He examines copepods (tiny crustaceans) and stentors (large unicellular organisms) that he has sampled from Belmont Pond, MA, and shows how their movements can be filmed at normal speed through a microscope and subsequently projected at a slower speed to reveal otherwise imperceptible details. Descriptive title cards indicate copepods filmed at 8 times and 60 times their normal speed. Related to a separate experiment, a very short color film clip at the end features slow-motion images of falling green-tinted droplets (research by Eric Newman).
TIME CODE | DESCRIPTION |
---|---|
00:00:01 | Introductory information: film title, synopsis, date, run time. |
00:00:08 | Film begins. |
00:00:15 | Hand-written title card with sketch: “FRESH WATER COPEPODS; Harold Edgerton, MIT June 1958.” |
00:00:17 | Harold E. Edgerton walks in a field with a dog, presumably located at Belmont Pond MA, from which he has collected a water sample for his experiments. |
00:00:21 | Edgerton sets up equipment in his laboratory to film copepods (tiny crustaceans). He shines a very bright light at the jar of fresh water with copepods that he has collected. |
00:00:28 | He stirs the jar contents. |
00:00:30 | Edgerton carefully drips pond water between two slides that are sealed together on 3 edges, to create a sample to film. |
00:00:32 | A close-up shot shows tiny copepods darting around in water sample contained between two slides. |
00:00:43 | [Title card] “NORMAL SPEED, 24 f.p.s. [feet per second]” |
00:00:45 | Backlit water sample shows copepods as silhouettes. |
00:00:57 | [Title card] “1/8 OF NORMAL, 64 f.p.s.” |
00:01:00 | Copepod in silhouette shown moving at slower speed. |
00:01:06 | [Title card] “1/60 OF NORMAL, 1500 f.p.s. ±“ |
00:01:09 | Copepod in silhouette shown moving at an even slower speed (in slow motion). |
00:01:58 | [Title card] “ACTION DURING A ‘JUMP’ OCCURS IN ABOUT 1/100 SECOND.” |
00:02:02 | Copepod seen in silhouette moves around, filmed in slow motion. |
00:03:49 | A person focuses and adjusts the microscope. |
00:04:05 | A stentor (trumpet animalcule) is shown in silhouette, all stretched out until it is touched with a probe and it rapidly shrinks into itself. |
00:04:13 | Take 2, same as above. |
00:04:20 | Take 3, same as above. |
00:04:28 | Two stentor organisms are probed and punctured (!). |
00:04:38 | Take 2, same as above. |
00:04:46 | Detail of the ciliate (hairy) end of the stentor showing twirling cilia. |
00:05:02 | [new topic] Close-up of green liquid drops falling, filmed in slow motion. [Research by Eric Newman] |
00:05:07 | End of film. |
00:05:12 | © 2010 MIT credits. |