What if every light bulb in the world could also transmit data? At TEDGlobal, Harald Haas demonstrates, for the first time, a device that could do exactly that. By flickering the light from a single LED, a change too quick for the human...

Explore the transformative impact of batteries and light bulbs on modern living, tracing their origins, development, and how they have revolutionized everyday convenience. Discover the scientific principles behind these inventions,...

An incandescent bulb mainly consists of two parts—the bulb and the filament. The bulb is generally made of glass, within which is a vacuum. The filament inside the bulb is where the actual light is produced. It is made of a long and...

Here we test the money saving advice given on a package of energy efficient light bulbs. We also define KiloWatt Hour; a term that often confuses students. Oh, we also determine the resistance of the light bulbs, ya know, just because...

This video is a lecture about energy dissipation and efficiency. It begins by defining what efficiency means in energy transfer processes and how it is calculated. The video provides examples of calculating efficiencies in different...

In this video, the concept of efficiency is discussed in relation to devices that transfer energy from one form to another. The video provides three examples of calculating efficiency, including a light bulb, a speaker, and an electric...

This video is a lecture on efficiency where the speaker explains how to calculate the efficiency of a device and identify the energy transfers that take place. The video starts with an introduction to Sankey diagrams that detail all the...

This video provides an explanation of how to calculate the efficiency of a device by using Sankey diagrams to identify energy transfers and utilizing a formula to find the percentage of useful energy output. The video includes examples...

Energy Efficiency | Energy | Physics | FuseSchool You may have been told that you cannot create or destroy energy, but we certainly use it - and pay for it, so what does get used up? CREDITS Animation & Design: Jean-Pierre Louw...

Learn the basics about the green chemistry principle that concerns energy efficiency, as a part of environmental chemistry. Many chemical processes are designed to be as efficient as possible. It is very costly if a chemical synthesis is...

The video focuses on the concept of energy dissipation and how it occurs in various systems. It begins by explaining the principle of conservation of energy and then goes on to provide examples of closed and open systems. The video then...

In this video we cover: - The idea that devices aren't 100% efficient - What efficiency is - The equation for efficiency - Examples of how to calculate efficiency - Why some devices like electric heaters are sometimes considered to be...

The light emitting diode, or LED, emits less heat than a traditional incandescent lightbulb, and it also lasts much longer. But where did these brilliant diodes come from? Stuff of Genius tells the story behind everyday inventions. From...

Learn the basics about the green chemistry principle that concerns energy efficiency, as a part of environmental chemistry. Many chemical processes are designed to be as efficient as possible. It is very costly if a chemical synthesis is...

Discover the transformative journey of lighting technology from Thomas Edison's incandescent bulbs to today's ultra-efficient LEDs and groundbreaking OLEDs. This video explains the evolution of light sources, their impact on energy...

What changes can the Carbon Family make in daily life to substantially decrease their carbon footprint? Everyday changes that could make the world of difference to our planet's climate. Human Geography - A Changing World - Learning...

The world of energy is a confusing place. What's better, nuclear or solar? What's the difference between fluorescent bulbs and LEDs? What's the difference between energy and power? And what the heck is a kilowatt-hour?!

This video discusses the definition and causes of heat waves, as well as the increase in their frequency due to global warming. It provides tips on how to stay cool during a heat wave, emphasizing the importance of staying hydrated and...

This video provides a brief overview of how the United States Postal Service works, from the moment mail is dropped into a postal box to its final delivery. It explains the sorting process, the use of barcodes for efficient tracking, and...

This video explores five fun facts about lightbulbs.

Tesla imagined impossible technologies more than a hundred years ago. He and Thomas Edison have arguably had more of an impact on modern technology than any other scientists.



Tesla’s biggest...