Frequency modulation - Part 1 - Basic Principles

Department of Defense 1964. Fundamentals of AM and FM radio communication, how FM eliminates problem of electrical interference, functioning of FM radio examined in detail.

 

ScienceCasts: The Surprising Power of a Solar Storm

A flurry of solar activity in early March dumped enough heat in Earth's upper atmosphere to power every residence in New York City for two years. The heat has since dissipated, but there's more to come as the solar cycle intensifies.

 

Surface Tension in Fluid Mechanics

National Committee for Fluids Mechanics Films
With Lloyd Trefethen, Deptartment of Mechanical Engineering, Tufts University

Other videos from this series

Plasma: The 4th State of Matter

Plasma is widely considered to be the fourth state of matter due to its unique properties. Plasma is a gas in which the atoms are ionized, meaning there are free negatively charged electrons and positively charged ions. This collection of charged particles can be controlled by electromagnetic fields and this allows plasmas to be used as a controllable reactive gas. The electronics industry uses this concept to etch very small patterns into silicon to make our modern day devices smaller and more efficient.

This movie was produced by students Bobby Bruce and Michael Sweatt for the A. James Clark School of Engineering's 2008 Vid/Terp competition.

Three Incorrect Laws of Motion

Newton's Three Laws of Motion are a landmark achievement in physics. They describe how all objects move. Unfortunately most people do not really understand Newton's Laws because they have pre-existing ideas about the way the world works. This film is about those pre-existing ideas. By recognizing what people are thinking, it becomes easier to describe the correct scientific concepts of Newton's Three Laws and how they differ from this 'intuitive physics'.

Other Veritasium videos

NASA | Solar Cycle

The number of sunspots increases and decreases over time in a regular, approximately 11-year cycle, called the sunspot cycle. The exact length of the cycle can vary. It has been as short as eight years and as long as fourteen, but the number of sunspots always increases over time, and then returns to low again.

Frames of Reference

A nice movie from the sixties made by the "Physical Science Study Committee" (PSCC) series on the laws of physics, inertia, and special relativity in different frames of reference.

What is a Higgs Boson?

Fermilab scientist Don Lincoln describes the nature of the Higgs boson. Several large experimental groups are hot on the trail of this elusive subatomic particle which is thought to explain the origins of particle mass.

Other Fermilab videos

Eureka! Episode 29 - Radiation Waves

Viewers learn that one of the chief ways in which heat energy moves is in the form of waves. This kind of heat transfer is called radiation.

Other Eureka episodes

Circuit Skills: Fiber Optics

Not all electronic signals are communicated via electricity. By transmitting information in the form of light, we can avoid many limitations inherent to traditional wiring. And on top of all that - fiber optics are just straight-up cool!

Temperature (Cassiopeia Project)

Temperature and atoms. Ideal gas law.

Other Cassiopeia Project videos

Cyclotron

How a clyclotron works.

Eureka! Episode 25 - Volume & Density

This program explains that volume refers to the amount of space an object envelops and that density refers to the amount of mass that is compacted in a given volume.

Other Eureka episodes

Eureka! Episode 24 - Heat conduction

Eureka! looks at the process of conduction, explaining that the application of heat to an object makes the molecules or atoms vibrate faster and cause a sort of "domino effect."

Other Eureka episodes

Eureka! Episode 23 - Electrons

Using an animated model of an atom, Eureka! illustrates how electrons whiz so quickly round the nucleus that they appear to form layers.

Other Eureka episodes

Eureka! Episode 22 - Atoms

This program explains that molecules are made up of atoms. In pure metals, all the atoms are arranged separately in a lattice-work pattern, but in most non-metals, liquids, and gases, the atoms are bunched together into molecules.

Other Eureka episodes

Fiber optic cables: How they work

Bill Hammack uses a bucket of propylene glycol to show how a fiber optic cable works and how engineers send signal across oceans.

Other "Engineer Guy" videos

Double Slit Experiment

Cassiopeia Project's depiction of the classic Quantum Mechanics "Double Slit" experiment  (very similar to this one).

Other Cassiopeia Project videos

Eureka! Episode 21 - Temperature vs. Heat

Eureka explains that heat refers to quantity of hotness, and is determined by the mass and speed of molecules. This program demonstrates that a bucket of water at a temperature of 50°C contains more heat than a cup of water at 100°C.

Other Eureka episodes

Physics of Surfing

Students who take UC San Diego's Physics of Surfing class get to go to beach, ride a board into the waves and see how physics works in the real world. Back in the classroom, they learn about how waves form, how they travel through the world's oceans and that surfboards follow the laws of fluid mechanics.