National Institute of Standards and Technology
Strontium Atomic Clock
The world's most accurate atomic clock based on neutral atoms has been demonstrated by physicists at JILA, a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder. The JILA...
Let's Tute
Calculating Mode of Group Data
This video explains how to calculate the mode of grouped data using a formula and a step-by-step approach. It demonstrates how to locate the model class, calculate the class size, and substitute values into the formula to find the mode....
Let's Tute
Calculating Mean of Group Data using Assumed Mean Method
In this video, the teacher explains the assumed mean method to calculate the mean of group data using a problem of daily expenditure on food of 25 households. The video provides a step-by-step guide to tabulate the data, find the assumed...
Zach Star
What math and science cannot (yet) explain
This video only covers a few things that we cannot yet explain including the WOW signal, FRB's, turbulence, P Vs NP, and some unsolved ciphers.
Curated Video
Changes of Medium: Waves Crossing Boundaries
This video is a lecture on how waves change as they cross the boundary between different materials, also known as changes of medium. The video explains what a medium is and how it affects wave propagation. The video uses examples of...
Curated Video
Do Microwaves Interfere With WiFi Signals?
Yes. Microwaves and radio waves are physically the same, i.e. both are forms of electromagnetic radiation. Some microwave rays can leak out and interfere with WiFi signals. We are basically constantly surrounded by electromagnetic...
Virtually Passed
frequency amplitude period derivation
Here I show the derivations behind f = 1/T and w = 2 Pi f. There are many different ways to prove these identities - this is a math heavy method. Frequency = f = (cycles / second) Period = T = (seconds / cycle) Amplitude = A = (m)...
Visual Learning Systems
Sound: the Doppler Effect
When you hear the roar of traffic, the bark of a dog, or your teacher's voice, you are experiencing sound. This program uses colorful animations to explore important characteristics of sound, including intensity, loudness, pitch, and...
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...
Zach Star
Math and physics can show up when you least expect
Math and physics can show up when you least expect
Virtually Passed
Steady State and Transient Mechanical Vibrations summary
This is a summary of all the videos we've made so far. Notice that our total response = our steady state (particular solution) + our transient (homogeneous solution). In most Engineering applications we will only focus on the steady...
ProTeachersVideo
Jonny Heeley's Masterclass: Averaging Continuous Data
This maths masterclass explores practical ways of looking at continuous data averages usung the very practical example of what size gloves a glove company should make. To gets to grips with continuous data such as hand sizes rather than...
Flipping Physics
AP Physics C: Simple Harmonic Motion Review (Mechanics)
Calculus based review of Simple Harmonic Motion (SHM). SHM is defined. A horizontal mass-spring system is analyzed and proven to be in SHM and it’s period is derived. The difference between frequency and angular frequency is shown. The...
The Wall Street Journal
On the Hunt
Kathy Xu, founder and managing partner at Capital Today Group, talks with WSJ Senior Asia Correspondent Phred Dvorak about distinguishing the good from the bad in China's venture-capital markets.
Two Minute Music Theory
G Sharp and A Flat Are Not The Same
A look at why G Sharp and A flat historically were two different pitches
Next Animation Studio
China builds massive radio antenna facility
China's new experimental radio antenna facility has been built on land that is 3,700 sq km in size and could possible be used for the Chinese military.
FuseSchool
Wave Equation
Wave Equation | Waves | Physics | FuseSchool Waves have a frequency (the number of complete waves passing a point every second and measured in Hertz), wavelength (the distance between two consecutive points on a wave) and amplitude - the...
Two Minute Music Theory
What Exactly Is A Pitch - TWO MINUTE MUSIC THEORY #10
Season 1, Episode 10 - Two Minute Music Theory Without pitch, we wouldn't have music. So what exactly is a pitch?
Catalyst University
The Strength-Duration Curve for E-Stim EXPLAINED
In this video, we explore the strength-duration curve, which is often seen in relation to E-Stim as a therapeutic modality. We will focus on how to interpret this set of curves.
Catalyst University
Phonophoresis EXPLAINED | Theory, Use, & Parameters
In this video, we explore the theory, use, and parameters with phonophoresis, an application of therapeutic ultrasound for drug delivery.
Catalyst University
Therapeutic Ultrasound EXPLAINED | Use, Parameters, & Real Example
In this video, we explore the theory, use, and parameters with therapeutic ultrasound along with a real-world example.
Catalyst University
Particle-on-a-Ring Example #2: Calculate Energy, Wavelength, and Momentum
Particle-on-a-Ring Example #2: Calculate Energy, Wavelength, and Momentum
Flipping Physics
Physical Pendulum - Period Derivation and Demonstration using Calculus
Calculus is used to derive the angular frequency and period equations for a physical pendulum. A physical pendulum is also demonstrated and real world calculations are performed. This is an AP Physics C: Mechanics topic. Content Times:...