investigates force, mass, acceleration and their interrelationships. portrays the effects of the basic laws of mechanics and newton's laws of motion,... - 1940 1949 個影片檔及 b 捲影像00:20
investigates force, mass, acceleration and their interrelationships. portrays the effects of the basic laws of mechanics and newton's laws of motion,... - 1940 1949 個影片檔及 b 捲影像00:32
contrasts study methods of two boys: one gets all his work finishedat school; the other takes his schoolwork home and still can'tfinish it. the boy... - 1940 1949 個影片檔及 b 捲影像00:26學生
english children - part 18 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:36壁爐 - 建築物特徵, 姐妹
english children - part 17 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:35
english children - part 16 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:38女人
english children - part 15 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:35
english children - part 14 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:30
english children - part 13 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:36
english children - part 12 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:36
english children - part 11 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:33
english children - part 10 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:38
english children - part 9 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:30
english children - part 8 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:35女人
english children - part 7 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:25
english children - part 6 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:37
english children - part 5 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:37女人
english children - part 4 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:32
english children - part 3 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:29
english children - part 2 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:29
english children - part 1 of 18. points out aspects of english home life, and presents events in a school, on the playground, at a cricket match, and at a grocery store - 1940 1949 個影片檔及 b 捲影像00:33校服
empty desk and office of colonel matt winn, manager of churchill downs, empty leather chair of colonel winn / framed portrait photograph of colonel... - 1940 1949 個影片檔及 b 捲影像00:48美國
scene of a wedding with the bride and groom leaving the church in the 1940s - 1940 1949 個影片檔及 b 捲影像00:16
scene of a wedding with the bride and groom leaving the church in the 1940s - 1940 1949 個影片檔及 b 捲影像00:15
woman stroll the sidewalk in london in the 1940s. wide shot of pedestrians and vehicles on busy street in city. - 1940 1949 個影片檔及 b 捲影像00:09行人, 倫敦 - 英格蘭
water jet approaching dock over lake; girls climbing out and smiling; man with glasses smiling to the camera; family gathered in front of the general... - 1940 1949 個影片檔及 b 捲影像00:41
woman and man relaxing on the lake beach in the sun, smiling and posing for the camera; children in swimsuits swimming in the lake while adults sit... - 1940 1949 個影片檔及 b 捲影像00:40
little girl in a red dress and bonnet, another girl in yellow dress standing in front of a pine tree; the two girls walk hand in hand toward camera... - 1940 1949 個影片檔及 b 捲影像00:14
tracking view of a little girl walking through the crowd at a crowded train platform and smiling at the camera; train driving away "twin city lines"... - 1940 1949 個影片檔及 b 捲影像00:48
family members exiting a car into the snow and smiles at the camera, little girl carrying a doll pretending to by a baby; couple waves from the... - 1940 1949 個影片檔及 b 捲影像00:47
two men building a camp fire next to a docked boat by the lake; panning view of trees reflected in the water; cabin and trees by the lake; lake... - 1940 1949 個影片檔及 b 捲影像01:22
well dressed family getting ready to pose for a photo standing in front of the driveway, man whistles and dog comes; man with a camera talking to... - 1940 1949 個影片檔及 b 捲影像00:36
men walking around a lake pier with a cabin in the background; little girl sitting on a chair in front of the cabin; signs next to the cabin "office"... - 1940 1949 個影片檔及 b 捲影像01:06
panning view of cabin in the woods next to a lake, pier and boats by the lake and forest in the background; row of boats docked by the lake; woman in... - 1940 1949 個影片檔及 b 捲影像00:52
tracking view of men on motorboats cruising on the lake and the forest in the background; riviera currents rolling toward camera, pine trees on the... - 1940 1949 個影片檔及 b 捲影像00:54
tracking view of girl riding a bicycle down the street, another girl sitting on the backseat; toddler on the sidewalk in the background; two men... - 1940 1949 個影片檔及 b 捲影像00:32
woman worker assembling small components inside factory; tank driving on the street and soldiers retreating - 1940 1949 個影片檔及 b 捲影像00:13
busy stockyard full of workers loading and unloading; man with clipboard writing standing on spool of cable; man loading large spools of cable; two... - 1940 1949 個影片檔及 b 捲影像00:25
busy factory floor with workers assembling various parts; military boat sailing on the water full of soldiers; man pushing cart full of mechanical... - 1940 1949 個影片檔及 b 捲影像00:30美國
man with glasses looking at paperwork; finger pointing at "national defense project" stamp on paper; boxes traveling down the conveyor belt; workers... - 1940 1949 個影片檔及 b 捲影像00:19
various explosions during battle and tanks surrounded by soldiers firing; american flag flying between two smokestacks; title card: "keep 'em flying!" - 1940 1949 個影片檔及 b 捲影像00:34
various views of boxes and cargo being loaded and transported by workers onto trucks; spools of cable being loaded - 1940 1949 個影片檔及 b 捲影像00:30
stable view of telephone; fighter jet flying in the sky; jet firing in the sky; bullets hitting the water; tank rolling by; warship firing on the... - 1940 1949 個影片檔及 b 捲影像00:30
cargo being unloaded from truck and people passing by in the background; field operators in front of switchboard and with headphones; worker standing... - 1940 1949 個影片檔及 b 捲影像00:19
various views of soldiers laying telephone cables in the field with trucks and tying cable to trees - 1940 1949 個影片檔及 b 捲影像00:26
various views of workers assembling small components on the assembly line; pilots getting ready in the cockpit and plane taking off - 1940 1949 個影片檔及 b 捲影像00:31
men walking toward building; floor full of people working behind office desks and men distributing paperworks - 1940 1949 個影片檔及 b 捲影像00:27
man writing formula on blackboard while talking to another man, man looking through microscope, and crystal on machinery - 1940 1949 個影片檔及 b 捲影像00:23
women workers working on the assembly line, assembled machine presented on table; tilt up view of large ship traveling on tracks surrounded by crowds... - 1940 1949 個影片檔及 b 捲影像00:27
soldier typing on machine on the field; different views of army trucks full of soldiers traveling down the road; men walkins towards a tall building - 1940 1949 個影片檔及 b 捲影像00:25
teacher and man in suit put headphones on the children in the classroom while the other man in suit plays a sound recorder; children listens and... - 1940 1949 個影片檔及 b 捲影像00:27美國
man pacing around inside the laboratory, writes diagram down on notebooks and smiles behind the desk - 1940 1949 個影片檔及 b 捲影像00:27
diagram of the interior of the ear with arrows pointing at different parts, ear reacting to vibrations - 1940 1949 個影片檔及 b 捲影像00:25
animation of telephones being connected and signals transmitted through cable - 1940 1949 個影片檔及 b 捲影像00:27
man presenting box with various light bulbs and dials, and pointing to different parts with finger - 1940 1949 個影片檔及 b 捲影像00:18
hands pressing buttons on machinery with dials and buttons and light bulb lights up - 1940 1949 個影片檔及 b 捲影像00:29
sound recorder playing, girl with headphones talking, hands writing on paper with pencil - 1940 1949 個影片檔及 b 捲影像00:16
spinning light bulb and animation of telephone cables connecting the u.s. - 1940 1949 個影片檔及 b 捲影像00:24
man picks up telephone behind office desk and talks while smiling; clear blocks rotate in superimposed image - 1940 1949 個影片檔及 b 捲影像00:21
animation of zig zag lines becoming one white line spreading across the frame - 1940 1949 個影片檔及 b 捲影像00:30
man and girl talking behind office desk, and hands turning handset of telephone; girl with earpiece and holding the other end of the earpiece in her... - 1940 1949 個影片檔及 b 捲影像00:31
animation of telephones being connected and signals transmitted through cable; telephones being picked up and more telephones and cables appear in... - 1940 1949 個影片檔及 b 捲影像00:24
clear blocks lined up and are rotated and diagram of machinery superimposed - 1940 1949 個影片檔及 b 捲影像00:16
zoom in view of various parts of the ear and arrow pointing at different parts - 1940 1949 個影片檔及 b 捲影像00:27
