NASA
Hubble Trivia: 14) Hubble observed what kind of explosion created by two neutron stars merging?
The Hubble Space Telescope has been revealing the secrets of the universe for over 30 years, but it turns out Hubble has some secrets of its own! The question is: Hubble observed what kind of explosion created by two neutron stars...
NASA
NASA | A Black Widow Pulsar Consumes its Mate
Black widow spiders and their Australian cousins, known as redbacks, are notorious for an unsettling tendency to kill and devour their male partners. Astronomers have noted similar behavior among two rare breeds of binary system that...
Healthcare Triage
Is the Apple Watch a USEFUL Medical Device?
Apple is pushing the medical benefits of the Apple Watch pretty hard, but we have questions about just how useful the watch's electrocardiogram feature really is. Aaron digs into the research on just how much the device is doing.
NASA
NASA | From the River to the Sea
A pulse of water released down the lower reaches of the Colorado River last spring resulted in more than a 40 percent increase in green vegetation where the water flowed, as seen by the Landsat 8 satellite. The March 2014 release of...
Curated Video
Servo motor, what's inside
In this video, we'll take a look inside a servo motor to see what's inside. This video is a great way to learn about servo motors and what they do! If you're interested in motors or electronics, this video is a great way to learn about...
Visual Learning Systems
The Amazing Heart: Pumping Life Through Your Body
This video explains the vital role of the heart as the body's pump, constantly circulating blood throughout the body. It highlights how the heart's rhythmic beats help propel blood through tubes in the arm and deliver oxygen to the...
Programming Electronics Academy
PWM and analogWrite: Arduino Course 4.7
A description of Pulse Width Modulation (PWM) and how it is used with Arduino.
NASA
NASA's Laser Mission to Measure Trees
The Global Ecosystem Dynamics Investigation (GEDI) is a lidar instrument that sends laser pulses down to Earth, where they penetrate the globe's temperate and tropical forests. The laser beams ricochet off the first thing they hit, which...
msvgo
Principle of Superposition of Waves
This nugget explains through mathematical expressions how two waveforms add up to give a net waveform.
NASA
NASA | GLASTcast 2008 Mission Update
The GLAST mission launched on June 11, 2008 and has been returning remarkable and revolutionary discoveries ever since. Recently renamed to the Fermi Space Telescope, after Nobel Prize winner Enrico Fermi, the mission is expected to...
NASA
NASA | Intro to LIDAR - 3D Version
Want to know the 3D shape of terrain on another planet? Want to study the height and density of Earth's forests? An amazing tool called LIDAR can help! Learn more in this video. This version of the video is presented in several formats...
NASA
NASA | Intro to LIDAR - 2D Version
Want to know the 3D shape of terrain on another planet? Want to study the height and density of Earth's forests? An amazing tool called LIDAR can help! Learn more in this video.
NASA
NASA | LOLA: Defining the Lunar Terrain
The Lunar Orbiter Laser Altimeter (LOLA) instrument on board NASA's LRO spacecraft will be responsible for building the highest detail topography available of the lunar terrain. In this video David Smith, LOLA's Principal Investigator,...
Curated Video
How Remote Controls Work
In this video, we learn how remote controls work by sending signals through electromagnetic signals. The remote control emits infrared radiation, which is received by a small infrared light detector on the device being operated. By...
Curated Video
Arduino for Beginners - 2022 Complete Course - Activity 14 - Solution
This video explains activity 14- solution. This clip is from the chapter "Ultrasonic Sensor - Measure Distances" of the series "Arduino for Beginners - 2022 Complete Course".This section explains measure distances.
Curated Video
Arduino for Beginners - 2022 Complete Course - How the Ultrasonic Sensor Works + pulseIn() Function
This video explains how the ultrasonic sensor works + pulseIn() function. This clip is from the chapter "Ultrasonic Sensor - Measure Distances" of the series "Arduino for Beginners - 2022 Complete Course".This section explains measure...
Curated Video
Neutron Stars Explained in Simple Words for Laymen
Neutron stars are formed from the core of some starrs. Neutron stars generally have a radius of only around 12 km. With masses exceeding 1.4 times that of the Sun, these are some of the densest objects in the Universe. A tablespoonful of...
Catalyst University
Cardiovascular Disease [Part 1] Intro + Peripheral Vascular Disease
In this video, we introduce the umbrella term, cardiovascular disease and then explore the basics of peripheral vascular disease (PVD).
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...
Professor Dave Explains
Topography and Types of Sediments
Now that we've learned about the layers of the ocean, let's focus on the floor. How did oceanographers learn about the composition of the ocean floor? What is sediment? How do different types of sediment get to the ocean and what happens...
FuseSchool
Heartbeat and Pulse
Ever wonder what causes the thump-thump sound of your heartbeat? It’s all to do with the valves. The sound of your heart beating can be attributed to your valves closing, and always in specific pairs. Separating the atria from the...
Curated Video
Pavlov’s Classical Conditioning
This video explains the concept of classical conditioning, using Ivan Pavlov's famous experiment with dogs as an example. It also explores how the brain processes and forms associations between stimuli and responses, and includes a...
Guinness World Records
Breaking Records with Synchronized Dance Moves
Twist and Pulse, Britain's Got Talent runners-up and inventors of a unique combination of street dance and comedy, are attempting to break their own Guinness World Records title for the most synchronized dance moves in 30 seconds. Use to...