When you have an electric current it’s useful to be able to measure that current. This is done in amps (often using a multimeter). This video explains what an amp (A) (short for ampere) is, which also involves the coulomb (C). The coulomb is the SI standard unit for electric charge, whereas the amp is the SI standard unit for current.
1A equals 1C per 1s (seconds).
One coulomb is roughly equivalent to 6.24 quintillion(!) electrons carrying a charge. That’s at 1A. Imagine how many electrons pass a certain point when the current is 5000A(!)
While today’s computers—referred to as classical computers—continue to become more and more powerful, there is a ceiling to their advancement due to the physical limits of the materials used to make them. Quantum computing allows physicists and researchers to exponentially increase computation power, harnessing potential parallel realities to do so.
Quantum computer chips are astoundingly small, about the size of a fingernail. Scientists have to not only build the computer itself but also the ultra-protected environment in which they operate. Total isolation is required to eliminate vibrations and other external influences on synchronized atoms; if the atoms become ‘decoherent’ the quantum computer cannot function.
“You need to create a very quiet, clean, cold environment for these chips to work in,” says quantum computing expert Vern Brownell. The coldest temperature possible in physics is -273.15 degrees C. The rooms required for quantum computing are -273.14 degrees C, which is 150 times colder than outer space. It is complex and mind-boggling work, but the potential for computation that harnesses the power of parallel universes is worth the chase.
What is electricity? How does electricity work? What do electrons do? What is short circuiting? These are all questions answered in this video: A fundamental explainer on what electricity is and how it works.
In following videos we’ll look at voltage, ampere, ohm (resistance) and many more electricity related topics. All of this is to build a foundation of knowledge to serve all the future (and past) videos here on Into The Ordinary.
A couple of choices were made during the production of this video, that can be helpful to know:
I chose to mention the Bohr-model in relation to the orbital model to bring the point across that there is more to atoms than just this. The What Are Atoms? video better explains orbitals than this video does, though.
I intentionally used the word “shells” instead of orbits because it better catches what electrons are in real life, although still a simplification. This video is about electricity, not particle physics.
Power generation, how batteries work, amps, volts, ohms, are all topics I want to address in separate videos.
There will probably be a few more questions about this video, which I will try to address in the comments or in the description, here.
Never directly connect a wire to both holes of a wall socket, and never directly connect a wire to both ends of a battery! This can be dangerous and potentially life-threatening!
Google Maps has taken on competitors like MapQuest, Yahoo and Apple. But after a decade of investing, collecting data and billions of images through Street View, Google has over a billion monthly users. It updated tens of thousands of times a day and has mapped more than 220 countries and territories. Here’s a look at how Google came to dominate maps.
Is cash still king? The coronavirus pandemic may cause a drastic decline in cash usage due to the risk of contamination. The unprecedented surge in the demand for contactless payment has also shown outstanding performances for major companies offering cashless payment methods, like Apple, Square and Paypal. Could covid-19 signal the end of cash in the United States and can the U.S. really function without physical currency?
A simple and easy introduction to electricity. It covers electric charge, the discovery of electricity, the nature of electricity and some of the more technical stuff for the classroom for you students.
Each blockchain has a series of nodes which are all connected. Some nodes store copies of the entire blockchain, some are for transaction verification, and some are for mining. Learn about the different types of nodes and how they all work together.
Capable of eye-catching gymnastic feats, lighting-quick machine learning and slick dancefloor bops, Boston Dynamics robots are truly a modern day technological marvel. And whether you think they mark the dawn of a new age of idle leisure for mankind, or represent a grim harbinger of humanity’s inevitable enslavement, you must admit they’re pretty cool from an engineering standpoint. So today, we’re peering under the hood of our future metallic overlords and finding out just how Boston Dynamics build their robots. The most striking feature of Boston Dynamics’ more famous latter-day creations – the adorable, dog-like Spot and the swole, Stormtrooper-esque humanoid Atlas – is that they walk on legs
Nikola Tesla’s biggest dream was a worldwide network of wireless power transmission. He built a lab and a massive prototype transmission tower…that never worked. But, a century later, engineers are chasing the same dreams of wireless power and making some tantalizing headway.
Decentralisation is one of the central principles of #bitcoin and a key factor in its popularity. It removes the middlemen and brings us one step closer to the future. But how can decentralised systems change the world? With DAOs or Decentralised Autonomous Organisations, smart contracts can do things which were once only possible in science fiction.
