Audio
Science Friday Initiative

Science Friday: The Incredible Shrinking Proton?

9th - 10th
New measurements from a group of physicists indicate that the proton may be about 4 percent smaller than previously thought. But what does that mean?
Instructional Video
Sophia Learning

Sophia: Subatomic Particles: The Proton: Lesson 3

9th - 10th
This lesson will explain that protons are positively charged particles having a mass of one amu and are found in the nucleus of the atom. It is 3 of 3 in the series titled "Subatomic Particles: The Proton."
Instructional Video
Sophia Learning

Sophia: Subatomic Particles: The Proton: Lesson 1

9th - 10th
This lesson will explain that protons are positively charged particles having a mass of one amu and are found in the nucleus of the atom. It is 1 of 3 in the series titled "Subatomic Particles: The Proton."