Physics Girl
Can you call a cell phone in the microwave?
Do cell phones placed in a microwave still receive signals? What is the difference between microwave oven radiation and the signals used by your phone?
Curated Video
Understanding the Greenhouse Effect and Human Impact on Climate Change
The video discusses the greenhouse effect and how it works in the Earth's atmosphere. It explains how greenhouse gases such as carbon dioxide and methane absorb long-wavelength infrared and re-emit it, increasing the temperature of the...
National Institute of Standards and Technology
NIST Unscripted - Marla Dowell
NIST physicist Marla Dowell describes her work with lasers and optoelectronics to develop high-speed electronic devices, provide measurement traceability for the semiconductor industry, and enable high-power laser calibrations with...
Professor Dave Explains
Quantum Mechanics and the Schrodinger Equation
Okay, it's time to dig into quantum mechanics! Don't worry, we won't get into the math, we just want to understand what the math represents, and come away with a new and improved view of the electron as both a circular standing wave and...
Curated Video
What is the Heisenberg Uncertainty Principle: Explained in Simple Words
Heisenberg’s uncertainty principle says that if we know everything about where a particle is located, we know nothing about its momentum. Conversely, if we know everything about its momentum, then we know nothing about where the particle...
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
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...
Physics Girl
Is energy always conserved?
When light passes through the universe and is redshifted by the expansion of space itself, how is energy conserved? The stretched light has a longer wavelength and therefore a lower energy. Is energy conserved? If so, where does it go?
Curated Video
Waves at a Boundary: Refraction, Reflection, and Transmission
This is a lecture video that explains what can happen to a wave as it encounters the boundary between two different media. The video discusses the changes in wave speed and wavelength at the boundary, as well as the phenomenon of...
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...
Catalyst University
Particle-on-a-Ring Example #2: Calculate Energy, Wavelength, and Momentum
Particle-on-a-Ring Example #2: Calculate Energy, Wavelength, and Momentum
Curated Video
Overview of The Big Bang Theory and Evidence of Universal Expansion
This video provides an overview of The Big Bang Theory, which is a theory about the evolution of the universe. The narrator explains how the redshift of light emitted by galaxies that are moving away from Earth provides evidence for the...
NASA
NASA in Silicon Valley: Understanding Star Formation in the Nucleus of Galaxy IC 342: Podcast
A feature from NASA's Ames Research Center in Silicon Valley originally posted on May 23, 2017.
Catalyst University
General Chemistry | Calculating Frequency (λ), Wavelength (𝝂), & Energy
In this video, we use the following equations to interconvert between and do calculations with Frequency (λ), Wavelength (𝝂), & Energy: 1) E=h𝝂 2) 𝝂=c/λ 3) E=hc/λ
Curated Video
Understanding Color Illusions
This video explores the concept of color illusions and how our eyes perceive and process different shades. It discusses the role of rods and cones in our eyes, the visible light spectrum, and the influence of background objects and...
NASA
NASA | Goddard's Detector Technology
Behind those stunning NASA images are specialized detectors developed, fabricated, and packaged here at the Goddard Space Flight Center. Tour the Detector Development Lab (DDL) and see how these first-of-a-kind detectors are created....
Looking Glass Universe
The Born Rule
In this video, the Debroy Hypothesis is explored, shedding light on the wave-particle duality of matter and the equation used to determine particle wavelength. The discussion delves into interpreting the hypothesis precisely, leading to...
Curated Video
Wave Speed, Wavelength, and Frequency: Understanding their Relationship
This video is a lecture that explains the relationships between wave speed, wavelength, and frequency of a wave. It starts by defining a transverse wave and discussing the amplitude, wavelength, frequency, and time period of a wave. The...
NASA
NASA | Alien Atmospheres
Since the early 1990's, astronomers have known that extrasolar planets, or "exoplanets," orbit stars light-years beyond our own solar system. Although most exoplanets are too distant to be directly imaged, detailed studies have been made...
NASA
NASA | CATS in Space Keep Eyes on Atmosphere
NASA Goddard is preparing to demonstrate for the fist time in space, a 3-wavelength, laser remote sensing instrument. The Cloud-Aerosol Transport System or CATS will measure clouds and aerosols in the Earth's atmosphere. This...
FuseSchool
How To Test For Positive Ions - Part 1
Learn the basics about Testing for positive ions in the first part of the lesson. How can Ions be detected? What methods or techniques are used? Find out more in this video!
FuseSchool
Testing For Positive Ions - Part 1
Learn the basics about Testing for positive ions in the first part of the lesson. How can Ions be detected? What methods or techniques are used? Find out more in this video!
NASA
NASA’s Roman Space Telescope Deepens Its Infrared View
NASA’s Nancy Grace Roman Space Telescope will be able to explore even more cosmic questions, thanks to a new near-infrared filter. The upgrade will allow the observatory to see longer wavelengths of light, opening up exciting new...