PBS
How Does Gravity Affect Light?
We know that gravity exerts its pull on light, and we have an explanation for why. Actually, we have multiple explanations that all predict the same thing. And at first glance, these explanations seem to describe completely different...
SciShow
3 Ways to Save Earth from an Asteroid
Hank gives us the skinny on three plans NASA scientists have come up with to save Earth from an asteroid impact. Hopefully we'll never have to use any of them.
Curated Video
The Photoelectric Effect : Light and Electrons
The photoelectric effect is a phenomenon where electrons are emitted from a material, typically a metal, when exposed to light. This effect supports the quantum theory of light and demonstrates the particle-like properties of...
Curated Video
Mass spectrometer
An instrument that analyses characteristics of atoms and molecules, including their mass. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Coriolis Effect
What is the Coriolis effect? How is it produced and how does it affect our weather? Earth Science - Weather - Learning Points. The way wind blows determines thunderstorms to hurricanes. The Coriolis Effect is a deflection of moving mass...
Flipping Physics
#53 Electricity and Magnetism Multiple Choice Solutions - AP Physics C 1998 Released Exam
This problem is about crossed electric and magnetic fields causing a beam of protons to pass undeflected.
FuseSchool
Spectrometry
Learn the basics about Spectrometry. What is spectometry and its use? Find out more in this video!
Curated Video
Development of the Model of the Atom
The video discusses the historical development of the model of the atom, from the ancient Greek philosopher Democritus' idea of tiny, indivisible particles to modern-day understanding of electrons, protons, and neutrons. It explains the...
Curated Video
Understanding Column Failure and Buckling
This is a video discussing the differences between beams and columns in structural engineering. The video explains that while all columns are beams, not all beams are columns, as columns can only experience compression while beams can...
msvgo
Sub-Atomic Particles –Electrons
It explains the discovery of electrons by using the cathode ray discharge tube and the e/m ratio. It also shows how to find the charge of electrons.
Getty Images
Hammerhead shark
Cocos Island in Costa Rica is one of the most exciting dive sites of hammerhead sharks. They can be seen in their favorite cleaning stations, where as if they had to forget about their reputation and will demonstrate vigilance in all...
Khan Academy
Refraction of Seismic Waves, Cosmology & Astronomy
Mr. Khan uses the metaphor of a car to help explain the change in the direction of waves as they hit a boundary between two mediums. He then goes on to explain the relationship between the earth's structure and density and the waves'...
Khan Academy
Khan Academy: Batteries: Reverse Electrodes (Polarity)
Video lecture explains what happens to the deflection when we attach the penny and zinc in the opposite direction? [1:23]
Khan Academy
Khan Academy: Batteries: Electrolyte (Salt Test)
Video lectures explores what happens to the deflection when we add salt to an electrolyte. Why? [1:04]
Khan Academy
Khan Academy: Batteries: Electrode (Distance Test)
Does the distance between the copper and zinc electrodes matter? What happens to the deflection when we hold them close vs. far apart? Why is there a difference? Watch this video lecture to find out. [1:06]
Khan Academy
Khan Academy: Batteries: How Much Electrolyte Does a Single Cell Need?
Observation: when we pull our cell out of the electrolyte it still causes a deflection, which increases when pressure is applied. How could this lead to more efficient batteries? [0:40]
Khan Academy
Khan Academy: Batteries: Battery Meter (Galvanometer)
Simple device which we can use to measure our homemade batteries. You can test it with any household battery first. What does this deflection represent? What forces are involved? [0:50]
Khan Academy
Khan Academy: Batteries: Electrode (Surface Area Test)
What's the difference between one piece of metal and three pieces of metal in our cell. Does deflection change? Why? [1:07]
Khan Academy
Khan Academy: Standard Cell
Watch as we test out a cell that holds the metals at a constant distance in this Khan video. We add it to salt water and then check the deflection. Can this be used as a standard unit? [1:08]
Khan Academy
Khan Academy: Reverse Electrodes (Polarity)
What happens to the deflection when we attach the penny and zinc in the opposite direction? Watch this video to find out. [1:22]
Khan Academy
Khan Academy: How Much Electrolyte Does a Single Cell Need?
This demonstration shows that when we pull a cell out of the electrolyte it still causes a deflection, which increases when pressure is applied. How could this lead to more efficient batteries? [0:39]