Photosynthesis
This animation is a very simplified description of the light-dependent reaction of photosynthesis, a unique biological process in which light energy (sunlight) is converted to chemical energy (adenosine triphosphate). The light-independent reaction takes place in all eukaryotic photoautotrophs (plants, algae, etc.). The process shown here occurs in less than a trillionth of a second, constantly (when light is available) and in great abundance.
Music by Ben Hammer. 

Author(s): No creator set

License information
Related content

Physics Nuclear fission E=mc²
Nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts, often producing free neutrons and lighter nuclei, which may eventually produce photons (in the form of gamma rays). Fission of heavy elements is an exothermic reaction which can release large amounts of energy both as electromagnetic radiation and as kinetic energy of the fragments (heating the bulk material where fission takes place). Fission is a form of nuclear transmutation because the resu
Author(s): No creator set

License information
Related content

Howto Make Ice Cream in a Bag for Preschoolers
This short video teaches you how to make real ice cream with your preschooler with just some plastic bags. This is a wonderful activity for using measuring skills, scooping and pouring skills, and experiencing a science reaction. The best part is the great tasting ice you can make in about 5 minutes! Run time 05:01.
Author(s): No creator set

License information
Related content

John Brown's Raid in 1859
This video is accompanied by text. "Tension between the North and South over the slavery issue grew more intense as the election of 1860 drew near. Violent reaction to the Kansas-Nebraska Act spread rapidly throughout the nation. The Supreme Court’s Dred Scott decision deepened the divide between Northerners and Southerners—antislavery supporters and proslavery-ites. In 1859, fifty-nine-year-old John Brown devised a plan to provoke a slave revolt to answer the “sacking” of Lawrence, Kans
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 17, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 18, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 19, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 20, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 21, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 22, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 23, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 24, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 25, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 26, Chemistry 14D, UCLA
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Organic Reactions and Pharmaceuticals, Lec 27, Chemistry 14D, UCLA [Finished]
Course Description: Chemistry 14D: Organic Reactions and Pharmaceuticals is a class that provides an in depth analysis of organic reactions, nucleophilic and electrophilic substitutions and additions; electrophilic aromatic substitutions, carbonyl reactions, catalysis, molecular basis of drug action, and organic chemistry of pharmaceuticals. About the Professor: Professor Hardinger has been a faculty member in the UCLA Department of Chemistry and Biochemistry since 1997. His professional career
Author(s): No creator set

License information
Related content

Sodium, an informative introduction
This video provides a few interesting reactions using sodium.  The scientists narrate the video well, explaining the reaction as it is happening.  By the end of the video, students will have a good understanding of sodium, its properties, and uses.
Author(s): No creator set

License information
Related content

Carbon

Carbon is essential to all life. The versatility of carbon's molecular structures and the enormous range of properties of its compounds are presented. Compounds that contain carbon are extremely diverse with a wide range of properties. Organic chemistry is devoted to the exploration of the properties of carbon.

Author(s): No creator set

4.2.2 Catalyst performance

Figure 3 shows the difference in the emission levels for CO, VOC and NOx for a vehicle, with and without a three-way catalytic converter. It is evident that the catalytic converter reduces the emissions of all three classes of pollutants quite dramatically over a wide range of speeds. Before we discuss the data in any detail, a few words about how they were obtained are in order.

Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Work of Art
Every Wednesday, Brooklyn Museum staff and local community gathered at Soda Bar in Prospect Heights to watch Bravo's Work of Art. This was the crowd reaction to the final few minutes of the finale when Abdi Farah was named the winner.
Author(s): No creator set

License information
Related content

4.3 Photosynthesis, respiration and decay

Green plants absorb solar radiation and use its energy to fuel photosynthesis — a chemical reaction in w
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University