Visual Learning Systems
Exploring the Relationship Between Electricity and Magnetism
In this video, we explore the fascinating relationship between electricity and magnetism. We discover that a simple electric wire can exhibit a magnetic force, as demonstrated by the movement of a compass needle when brought close to it....
Mazz Media
Electricity
Electricity makes our lives easier every day. We use electricity in our work and play. Because electricity is virtually unseen, it is often difficult to understand just where it comes from and how it works. By watching the video and...
Curated Video
Emission and Absorption of Infrared Radiation: Comparing Surfaces as Absorbers Experiment
The video is the second lecture presentation on the emission and absorption of infrared radiation. The presenter discusses the nature of infrared radiation and how it is absorbed and emitted by various surfaces. They then introduce an...
Curated Video
Wavelength and Color: Understanding Visible Light and the Electromagnetic Spectrum
This is a lecture video on the topic of wavelength and color. The video focuses on the visible light portion of the electromagnetic spectrum, which can be split into different colors. The video explains the relationship between...
Curated Video
Understanding the Turns Ratio Equation in Transformers
This is a lecture video on the turns ratio equation for transformers. The video explains how the potential difference across the primary and secondary coil of a transformer depends on the number of turns of wire in each of the coils. The...
Curated Video
Understanding the Dynamo: How the Generator Effect Produces Direct Current
The video explains how the generator effect is utilized in a Dynamo to produce a direct current. The concept of the generator effect is discussed, where a potential difference is induced in a conductor when it's placed in a magnetic...
Curated Video
Understanding Fleming's Left Hand Rule and the Motor Effect
This is a lecture video on Fleming's left hand rule. The video begins by discussing the magnetic field produced by permanent magnets and how a magnetic field can also be produced by a current carrying wire. The motor effect is also...
Curated Video
Understanding Input and Output Currents in Transformers and Their Practical Applications
The lecture video discusses input and output currents of transformers and how the number of turns of wire on primary and secondary coils affect them. The video explains the definition of electrical power and how it is related to current...
Curated Video
Step Up and Step Down Transformers: Understanding the Differences
The video explains the differences between step up and step down transformers. It starts with an introduction to the purpose of transformers and the primary and secondary coils. The video then goes on to describe the two types of...
Curated Video
Emission and Absorption of Infrared Radiation: An Experiment on the Effectiveness of Different Surfaces as Emitters of Infrared Radiation
This video is a lecture presentation on the emission and absorption of infrared radiation or IR. The presenter walks the viewer through an experiment to compare the effectiveness of four different surfaces as emitters of infrared...
Curated Video
The Mechanics of Headphones
Headphones work by converting electrical signals into sound waves through the use of an electromagnet and a cone. The diaphragm cone inside the driver assembly vibrates when triggered by an alternating current, creating sound waves that...
NASA
NASA | Beyond Einstein: Part II
View "Beyond Einstein: Part I" at:Albert Einstein's theories rank among humanity's greatest achievements. They sparked the scientific revolution of the 20th Century. In their attempts to understand how space, time and matter are...
Science Buddies
How to Build a Paper Speaker
This video has instructions on how to make a paper speaker using a simple electromagnet. A printable template for the speaker can be download from the Science Buddies website:...
Curated Video
Alternators and the Generator Effect: How They Create Alternating Currents
This video discusses how alternators use the generator effect to produce an alternating current. The video explains how this effect can be utilized to generate both alternating and direct currents, and how the direction of the potential...
Curated Video
The Colors of Opaque Objects: Understanding Light Interaction with Different Surfaces
This video is a lecture on the colors of opaque objects and how light interacts with different surfaces to define the color of an object. It explains how white light is a combination of all visible colors and that surfaces with color...
Curated Video
Filters and the Absorption of Different Wavelengths of Light
The video is a lecture on filters and how they work. It discusses how white light is a combination of all visible wavelengths and how filters are materials that are transparent and only permit certain wavelengths of light to transmit...
Curated Video
Magnetic Fields Around Current Carrying Wires
This video explains the concept of magnetic fields that form around current carrying wires. It defines magnetic fields and how they are represented by magnetic field lines, which indicate the direction and strength of the magnetic field....
Curated Video
The Effects of Wavelength and Speed on Electromagnetic Waves
This video is a lecture on the effects of wavelength and speed on electromagnetic waves. The speaker explains what can happen to a wave at the boundary between two media, including reflection and refraction. They also discuss how...
Curated Video
Properties and Uses of Ultrasound
This is a lecture video discussing the properties and uses of ultrasound. The video begins by explaining the frequency of sound waves detectable by the human ear, and how ultrasound waves operate beyond the human hearing range. The video...
Curated Video
Understanding Seismic Waves: Types, Origins, and Detection
This video is a lecture about seismic waves, specifically those produced by earthquakes. The video covers the basics of earthquakes, including where they originate and the different layers of the Earth. It also discusses the two main...
Curated Video
Understanding the Structure and Action of Transformers
This video explains the structure and action of a transformer. The video discusses the two types of transformers, step up and step down, and provides examples for each. The video then goes into detail about the structure of a transformer...
Curated Video
Electric Motor: How Current and Magnetic Fields Cause Rotation
The video is a lecture on electric motors, covering how a current carrying conductor placed in a magnetic field can cause rotation due to the motor effect, which is the force experienced by a current carrying wire in a magnetic field....
Curated Video
Echo Sounding: Using Ultrasound to Locate Objects Beneath Water
This video is a lecture on echo sounding, a technique used by ships to locate objects beneath the surface of water. The video explains how ultrasound is partially reflected at the boundary between two different media, which is used to...