• 224 Videos, Slides, Films

• 132 Physical sciences
• 45 Mechanics
• 43 Quantum theory
• 38 History
• 36 Study and teaching
• 31 Discoveries in science
• 23 Research
• 21 Technology
• 21 Thermodynamics
• 20 Electricity
• 20 Electromagnetism
• 20 Magnetism
• 18 Biology
• 18 Chemistry
• 16 Waves
• 15 Cosmology
• 15 Sound-waves
• 14 Astronomy
• 14 Sound
• 14 Wave theory of light
• 13 Environmental sciences
• 11 Engineering
• 11 Mathematics
• 11 Power resources

• 137 Infobase
• 83 Films for the Humanities & Sciences (Firm)
• 18 Cerebellum Corporation (Firm)
• 17 A&E Networks (Firm)
• 17 Liacos Educational Media (Firm)
• 13 PBS (Firm)
• 10 Annenberg Learner (Firm)
• 10 Cambridge Educational (Firm)
• 9 Makematic (Firm)
• 9 Video Education America (VEA) (Firm)
• 8 TVF International (Firm)
• 8 Video Education Australasia
• 7 BBC Worldwide Ltd
• 7 Inside Science (Firm)
• 7 Public Broadcasting Service (U.S.)
• 6 Magic Lantern Media Inc (Firm)
• 4 La Compagnie des Taxi-Brousse
• 4 Uniview Worldwide
• 3 Filmoption International (Firm)
• 3 Open University
• 3 TED (Firm)
• 2 4 Learning (Firm)
• 2 ABC International
• 2 Allegro Productions (Firm)

• 221 English
• 3 Unknown

• 5 United States
• 3 Outer space
• 1 Europe
• 1 Russia
• 1 Universe

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