Today we know pathogens -- viruses, bacteria, and certain other microbes -- are responsible for many diseases. But linking specific diseases to the microbes that cause them has been surprisingly tricky, and some research practices lead...

Ernest Rutherford's Nuclear Model of the Atom: A Transformative Journey
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Background and E
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• J.J. Thomson's Plum Pudding Model, a sphere of diffuse positive charge with negatively charged...

Astronomer Jill Tarter, Director of the Search for Extraterrestrial Intelligence Institute, describes how she navigates between the different perspectives of science and religion.

University of Pennsylvania physicist Justin Khoury describes how, while many are convinced of the existence of dark matter rather than changing our understanding of the laws of gravity, we can’t yet be sure what the final outcome will be.

What are the 9 properties you can apply to proofs? What else can you apply to proofs?<br/>
Geometric Proofs, Part 3

This video contains 1 proof to solve.<br/>
Geometric Proofs, Part 6

Why is it important to do proofs? What is a proof? Why does every statement have to be true?<br/>
Geometric Proofs, Part 1

Postulates of Quantum Mechanics: Expectation Values

The nugget explains the different theories of evolution (mutation theory, theory of natural selection, theory of inheritance) with examples.

What are proofs trying to get you to do? What is needed when preparing to work on a proof? Geometric Proofs, Part 2

Euclid's Geometry part 2/2: In this video, we explore the first four postulates, which are considered self-evident truths, and the fifth postulate, which has been extensively studied and led to the development of an equivalent version by...

Master writing a two column proof using segment addition theorem

This video contains 2 proofs to solve.<br/>
Geometric Proofs, Part 4

Master Find the missing Angle Measure using the Angle Sum Postulate

Master How to use the segment additon postulate to find the missing length of a line

A portion of our culture distrusts the scientific method, assuming that there are transcendent truths unknowable by science. But nothing is truly out of bounds for science. If it's real, it can be studied, and tested. Perhaps the...

This video contains 2 more proofs to solve. Geometric Proofs, Part 5

How can just two rules of Einstein's 1905 theory of special relativity lead to seemingly paradoxical changes in the perception of time? Want exclusive updates whenever a new video is posted? Special relativity was one of the first...

It explains Euclid's postulates, theorems and prepositions.