• 38 Videos, Slides, Films

• 18 Physics
• 14 Chemistry
• 7 Mechanics
• 5 Astronomy
• 5 Chemical elements
• 5 Chemicals
• 4 Chemical processes
• 4 Chemical reactions
• 4 Thermodynamics
• 3 Solar system
• 2 Electricity
• 2 Electromagnetism
• 2 Magnetism
• 1 Chemistry, Organic
• 1 Environmental chemistry
• 1 Exploration
• 1 Galaxies
• 1 Outer space
• 1 Sound
• 1 Sound-waves
• 1 Space
• 1 Space flight
• 1 Stars
• 1 Wave theory of light

• 38 Films Media Group

• 38 English

• 38 Internet videos
• 38 Video recordings for the hearing impaired

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