a chemistry students drains liquid into a beaker and the reaction causes it to change color. - 燒杯 個影片檔及 b 捲影像00:19
close-up sequence showing a scientist mixing two clear liquids in a beaker in a demonstration of how nylon is made, uk. - 燒杯 個影片檔及 b 捲影像00:26
cu female researcher studying glass flask of blue chemical / new york city, usa - 燒杯 個影片檔及 b 捲影像00:13
steam rises from a table littered with pots, pans, beakers and other equipment. - 燒杯 個影片檔及 b 捲影像00:12
close up tilt down test tubes filled with bubbling, colored liquid with smoke rising from the top - 燒杯 個影片檔及 b 捲影像00:11
b/w 1952 low angle male scientist looking at liquid in beaker + placing back into holder in laboratory - 燒杯 個影片檔及 b 捲影像00:05
tracking shot from bubbling test tubes + beakers to scientist spreading synthetic flesh onto his face - 燒杯 個影片檔及 b 捲影像00:11
oil drop into a water, slow motion macro shot of gold yellow oil liquid bubble drop into a clean water. - 燒杯 個影片檔及 b 捲影像00:22
b/w 1940s close up profile scientist looking at bubbling beakers in laboratory / industrial - 燒杯 個影片檔及 b 捲影像00:02
energy for the future - part 9 of 28. constantly growing energy needs, dwindling reserves of fossil fuels, recent fuel shortages, and increasing fuel costs -- such conditions have established a need for new energy sources. this film examines energy altern - 燒杯 個影片檔及 b 捲影像00:36
slow motion shot of a laboratory beaker containing a red liquid being dropped and shattering on a hard surface. - 燒杯 個影片檔及 b 捲影像00:33
nitric oxide discovery; int england beckenham wellcome foundation labs seq dr salvador moncada working with tubes and beakers and holding phial of... - 燒杯 個影片檔及 b 捲影像01:09
female black scientist, curly hair working research with samples, looking at liquids in beaker, test tube sample in science laboratory. - 燒杯 個影片檔及 b 捲影像00:15
scientist amid broad array of lab glassware uses pipette to transfer fluid to flask then turns valve to pour liquid into beaker; two triangular... - 燒杯 個影片檔及 b 捲影像00:49
carbon chemist pouring prestone anti-freeze solution into beaker w/ 50% water. vs pouring mix into larger beaker, turning on heat, chemist measuring... - 燒杯 個影片檔及 b 捲影像00:38
people walking harvard yard sidewalks, edward mallinckrodt chemical laboratory, carved name above columns, vs undergrads in chemistry class lab,... - 燒杯 個影片檔及 b 捲影像00:21
high angle medium shot fisheye technician pouring purple liquid from beaker to beaker while rotating back and forth - 燒杯 個影片檔及 b 捲影像00:23
scientists use pipette dropper samples to test tubes.to conduct scientific experiments 4k stock video - 燒杯 個影片檔及 b 捲影像00:05
/ otto loewi working in his laboratory / loewi with beakers and flasks, makes observations and takes measurements. otto loewi in his laboratory on... - 燒杯 個影片檔及 b 捲影像00:47
unrecognizable teacher helping a happy little boy during science class mix some liquids - 燒杯 個影片檔及 b 捲影像00:14
ms water in spiral using magnetic stirrer and stir bar in lab / toronto, ontario, canada - 燒杯 個影片檔及 b 捲影像00:07
