Extra dimensions, which may well be an incorrect hypothesis, are one possible explanation for why gravity is so much weaker than the other forces. In this video, Great Courses professor Dr. Don Lincoln explains it all with the help of a talking rabbit. […]
The unifying theories of physics are among the greatest and most complex in all of science—nothing less than a search for the theory of everything. […]
Sophisticated consumers of science have heard that the Higgs boson is the origin of mass for ordinary matter. This is true, to a degree… […]
Flowering plants arrived relatively late in geological time, between 290 to 145 million years ago. But once here, they evolved quickly and often displaced many other types of plants. In fact, in terms of species, flowering plants are the dominant plant form on Earth today with more than 300,000 types. Learn how their unique reproductive mechanisms led to this explosion of speciation in such a relatively short time.
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Light propagates through space as a continuous wave, but also exchanges energy in the form of discrete particles. So, wave or particle—what is light? […]
Among the incredible Hubble cloud images, none has been received with greater public acclaim than the detailed 1995 snapshot of newborn stars emerging from giant pillars of gas and dust inside the Eagle Nebula. This image looks like a fantasy landscape out of a dream or a children’s story. Get ready to explore this image in the context of galactic interstellar clouds, the process of star formation, and the impact of young stars on their interstellar environments. […]
Examine the nuances of alternating and direct currents, see how transformers use electromagnetic induction to transform voltage levels in AC circuits, and observe the role of diodes and capacitors in regulating current. See how the DC power supplies that charge our cell phones are constructed so that they convert alternating to direct current. […]
Weather radar technology has revolutionized the forecasting of severe storms and has saved many lives. The revolution began in the evening of April 9, 1953, when two meteorologists at the Illinois State Water Survey decided to break the rules… […]
In many ways, the products of modern engineering that have the most substantial influence on our lives are the ones we almost never think about… […]
On this episode of The Torch, we examine what we have learned from neuroscience about several brain myths including – do we really only use 10% of our brain, can we multitask effectively, are male and female brains different? […]
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