vaccine production - red liquid in bottle, to gas burner, zoom out to include two female technicians filling bottles with syphon / along row of small... - 本生燈 個影片檔及 b 捲影像01:07注射疫苗
thin man in double breasted suit and his little boys in identical outfits walk down a brownstone's steps and proceed down sidewalk / a 20-something... - 本生燈 個影片檔及 b 捲影像01:32
slow motion close-up of igniting kitchen cooking gas burning fire stove top - 本生燈 個影片檔及 b 捲影像00:11家庭電器
british penny held by tweezers in flame of bunsen burner, with audio, sound available - 本生燈 個影片檔及 b 捲影像00:07
this bunsen burner turned into a flamethrower. a man is toying around with the bunsen burner making it a flamethrower by producing a line of fire at... - 本生燈 個影片檔及 b 捲影像00:09
uses experiments and animation to show heat as the energy of molecular action. illustrates the transfer of heat by conduction, convection and... - 本生燈 個影片檔及 b 捲影像00:32
uses experiments and animation to show heat as the energy of molecular action. illustrates the transfer of heat by conduction, convection and... - 本生燈 個影片檔及 b 捲影像00:39
clarifies the scientific concept of energy and relates atomic energy to the other forms of energy - 本生燈 個影片檔及 b 捲影像00:39
explains the five homologous series of hydrocarbons and shows how members of each series differ from the others - 本生燈 個影片檔及 b 捲影像00:31
explains the five homologous series of hydrocarbons and shows how members of each series differ from the others - 本生燈 個影片檔及 b 捲影像00:38
science chemistry lab icon molecular structure animation on chalk board.laboratory tube ,glass ware equipment for experiment.microscope for magnified cell. - 本生燈 個影片檔及 b 捲影像00:09
algae bioreactors, spent grain and laboratory at young henrys brewery in sydney, australia, on friday, august 19, 2022. young henrys uses bioreactors... - 本生燈 個影片檔及 b 捲影像00:47
employee working in a laboratory of the young henrys brewery in sydney, australia, on friday, august 19, 2022. young henrys uses bioreactors with... - 本生燈 個影片檔及 b 捲影像00:12
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:14
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:19
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:11
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:28
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:31
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:08
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:25
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:08
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:13
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:05
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:14
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:09
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:05
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:33
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:08
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:04
close-up, flames from fire. night bonfire, logs are on fire firewood coal closeup in the fireplace. - 本生燈 個影片檔及 b 捲影像00:05
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (sodium nitrate) - 本生燈 個影片檔及 b 捲影像00:12
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (sodium nitrate) - 本生燈 個影片檔及 b 捲影像00:12
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (strontium carbonate) - 本生燈 個影片檔及 b 捲影像00:12
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (strontium carbonate) - 本生燈 個影片檔及 b 捲影像00:12
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (strontium carbonate) - 本生燈 個影片檔及 b 捲影像00:10
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (sodium nitrate) - 本生燈 個影片檔及 b 捲影像00:09
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (strontium carbonate) - 本生燈 個影片檔及 b 捲影像00:13
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (strontium carbonate) - 本生燈 個影片檔及 b 捲影像00:21
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (sodium nitrate) - 本生燈 個影片檔及 b 捲影像00:14
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (strontium carbonate) - 本生燈 個影片檔及 b 捲影像00:10
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (strontium carbonate) - 本生燈 個影片檔及 b 捲影像00:16
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (lithium carbonate) - 本生燈 個影片檔及 b 捲影像00:09
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (lithium carbonate) - 本生燈 個影片檔及 b 捲影像00:09
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (potassium carbonate) - 本生燈 個影片檔及 b 捲影像00:14
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (sodium nitrate) - 本生燈 個影片檔及 b 捲影像00:09
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (lithium carbonate) - 本生燈 個影片檔及 b 捲影像00:22
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (sodium nitrate) - 本生燈 個影片檔及 b 捲影像00:11
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (lithium carbonate) - 本生燈 個影片檔及 b 捲影像00:23
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (potassium carbonate) - 本生燈 個影片檔及 b 捲影像00:12
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (potassium carbonate) - 本生燈 個影片檔及 b 捲影像00:12
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (copper sulfate) - 本生燈 個影片檔及 b 捲影像00:07
a flame test used in chemistry to detect the presence of certain metal ions, based on each elements characteristic emission spectrum (potassium carbonate) - 本生燈 個影片檔及 b 捲影像00:11