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Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…

How dipole moment determines the intensity of a signal in an IR spectrum. Organic chemistry Sal and Jay cover topics covered in college org…

Patterns and processes of evolution. How evolution and natural selection are reflected in the similarities and differences of organisms. Vi…

Life is chaos and the universe tends toward disorder. But why? If you think about it, there are only a few ways for things to be arranged i…

Finding the half reactions in a combustion reaction, and identifying what is getting oxidized and reduced. Chemistry Did you know that ever…

Linear geometry of a triple bond. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understandi…

First living things on land clarification (This video copyrighted under Create Commons Attribution and Share-Alike CC-BY-SA license) Biolog…

Hank discusses the process by which organisms grow and develop, maintaining that, in the end, we're all just tubes. Biology Life is beautif…

Example of using integrated rate law to solve for concentration, and calculating the half life for a second-order reaction. Chemistry Did y…

Overview of B cells (B lymphocytes) and how they are activated and produce antibodies. Biology Life is beautiful! From atoms to cells, from…

Learn how chance events can alter allele frequencies in populations, particularly when the populations are small, via genetic drift, the bo…

How to identify functional groups present in organic compounds Organic chemistry Sal and Jay cover topics covered in college organic chemis…

Illustrating the complexity of signal transduction with a MAPK pathway. How mutations in the pathway are linked to cancer. Biology Life is …

Definition of ion and ionization energy, and trends in ionization energy across a period and down a group. Chemistry Did you know that ever…

Factors that influence the global distribution of biodiversity. Video by California Academy of Sciences. Biology Life is beautiful! From at…