How Things Work

The Internet - how it works! is an illustrated story for children in school, explaining how the internet and its address system works. The purpose is to face the curiosity in students in classes 1-3 about how the internet works, and to stimulate discussions surrounding technology in classrooms.

Description of the role and operations carried out by a control unit inside a CPU. Educate yourself on computer technology in this instructional video.

Find out more about how the Denver Police Department is using License Plate Reader (LPR) technology to help with crime prevention. Inventions that are an integral part of how society functions.

Demonstration on the only working model of a Gutenberg printing press--Crandall Historical Printing Museum. A revolutionary invention for the whole humanity.

Now we look at how the technology behind Ultrasound actually works and how it can 'see' inside your body.

60 Seconds of Science explains what is happening in the body when it undergoes an PET scan. A PET scan uses radioactive tracers to create 3D images of the body. The radiation from the tracers poses little danger to the patient since they quickly pass out of the body. The kind of tracer used will depend on what the doctor is looking for. Often when looking for cancer, doctors use FDG, a modified form of glucose. The isotope attached to the carrier molecule produces small particles called positrons, which interact with surrounding electrons. The resulting release of photons is detected by the PET scanner and translated into an image through computer processing.

It uses a radioactive source to generate a tiny current which is disrupted when smoke flows through the sensor.

Lidar or light detection and ranging is, how it works and what types of information it can provide.

60 Seconds of Science explains how CT scans work. CT images are more detailed than conventional x-ray images. Image slices that CT scans produce can be 2 or 3 dimensional and can reveal abnormal structures or help the physician plan and monitor treatments.

The world's smallest atomic clock

How the three key characteristics of laser light - single wavelength, narrow beam, and high intensity - are made. Explaining the operation of a ruby laser - the first laser ever made - showing how electronic transitions create stimulated emission to give coherent light, and then how the ends of the ruby cavity create a narrow wavelength highly collimated beam.

A ballpoint pen seems simple: press a button you can write, press again and put it in your pocket. Yet inside a clever mechanisms turns that simple push into all sorts of other motions. This video uses detailed animation to look inside the iconic Parker Jotter ink pen and see how it works.

How a microwave oven heats food. How the microwave vacuum tube, called a magnetron, generates radio frequencies that cause the water in food to rotate back and forth.

How engineers send signal across oceans.

Cameras are an integral part of modern living. To understand the basic concept of photography one really needs to understand what a camera is. This lesson will show you the progression of the camera from a basic pinhole-camera into a modern digital camera.

There is so much discussion and #confusion about #AI nowadays. People talk about #deeplearning and #computerVision without context. In this short video, I give context on how to think about AI.

NIBIB's 60 Seconds of Science explains what is happening in the body when it undergoes an MRI.

What is HTML and how does it communicate with web browsers to display pages the way you want?

How Elevator Works. Elevator Construction Animation. Technology Behind the Elevator. The elevator is a type of vertical transport equipment that efficiently moves people or goods between floors of a building. Elevators are generally powered by electric motors that either drive traction cables or counterweight systems like a hoist, or pump hydraulic fluid to raise a cylindrical piston like a jack.

The engineering inside a toy music box. He describes how the comb is mass manufactured, details the spring, gears and governor that drive the box, and shares some history of early music boxes.