The Discovery of Atoms and Nuclei

JJ Thomson discovered atoms are made up of things, which he called electrons. The video in the Vertasium playlist explains Thomson's model of the atom, known as the plum pudding model. It presents the new knowledge Thomson wanted to...

Marie Curie overcame limitations to become the first person to win two Nobel Prizes. A video presentation outlines her work and discoveries in radioactivity. The narrator gives a timeline of her achievements as she sacrificed her...

How old is Earth and how do scientists know the answer? Throughout history, many researchers, scholars, and leaders answered this question with varying degrees of accuracy. The 20th episode of Crash Course History of Science introduces...

Seeing is believing! But, how can something as tiny as an atom be made visible? Explore the history of the atom with a video from the American Chemical Society's Reactions playlist. Content includes early concepts of the atom, as well as...

How do you prove the existence of something you can't see? For Albert Einstein, a liberal application of math usually did the trick! Physics scholars discover the relationship between atomic size and the motion of larger particles...

Robert Koch and his team of scientists identified the germs that cause diphtheria, typhoid, pneumonia, gonorrhea, meningitis, whooping cough, tetanus, plague, leprosy, syphilis, and more—that's some important work! Over a period of 100...

Viewers learn about the history of our knowledge of atoms through the discoveries of eight different scientists: Mendeleev, Democritus, Dalton, Thompson, Schrodinger, Bohr, Rutherford, and Chadwick. 

Peer review of science laboratory reports? You bet! First, learners work in pairs to review a scientific article. Then they trade lab reports for peer review. The end result is the publication of a classroom scientific journal!

Scientific discord is part of the road to new discoveries. Scholars learn how scientists challenge each other to prove and explain their conclusions in the final lesson of the four-part series Into the Atom. The video lesson explains the...

This is a tremendous overview of the tiny atom. Journey through the history of human understanding of this basic building block of matter. Examine each of the sub-atomic particles in detail: neutrons, protons, electrons, quarks. Peruse...