Introduction to Capacitors

Demonstrates basic function and includes information on calculating the capacitance of parallel and series configurations.

 

AC vs DC

We all know Thomas Edison, his accomplishments are legendary, over 1000 patents were issued to this prolific inventor. Nikola Tesla, noted Serbian academic, was another inventor from the same period, trained in Europe as an engineer, he emigrated to the United States where he never attained the stature of Edison but arguably accomplished more. He is the inventor of our modern electrical power grid. This video summarizes this accomplishment and the role that both Edison and Tesla played in this accomplishment.

 

Pi

This video discusses the history of and ongoing attempts to resolve pi. Includes a demonstration of determining pi by measuring the circumference and diameter of a circle.

 

Percent Oxygen in Air

This video demonstrates how to determine the percent of oxygen in air using some simple equipment.

 

Measuring the Universe

The vast size of the universe requires special units when measuring distances. This video explains the Astronomical Unit, the Light-year and the parsec.

 

Build an Electric Motor

This video demonstrates how to build a simple electric motor. Includes a discussion of some of the science behind electric motors.

 

The Pendulum and Galileo

Galileo's investigation of the pendulum played a role in the evolution of science. He performed some of the first experiments while discovering the relationship among length, mass and displacement. If you are teaching the scientific method, the pendulum is a good project to start with. Galileo probably gained insight into many issues around motion from his investigation of the pendulum. The video also mentions issues with the church and academia.

 

How to Weigh the Earth

This video demonstrates how to determine the mass of the earth using some very simple equipment and a powerful mathematical expression. A century wide collaboration between Newton and Cavendish makes this possible. The video includes a discussion of Newton's universal law of gravitation and Cavendish's famous experiment that led to the determination of "G" the universal gravitational constant.

 

Levers and Jacks

This video shows a clever mechanical mechanism used in this lever type jack. Suitable as a resource when teaching about simple machines.

Source: Hila Science Videos

Buoyancy and Density

What floats?  What sinks? It depends on density. Archimede's Principle

Source:  Hila science videos

The Siphon

Mechanical Advantage - Pulleys

Mechanical advantage of a fixed pulley, a movable pulley and a chain block.