This video explains why the ocean appears blue. It is because the water molecules in the ocean absorb all colors except for blue, which is reflected back to our eyes. As we go deeper into the ocean, the red part of the spectrum is...

In this video lecture, the topic of infrared radiation is explained in relation to how it affects the temperature of a body. The video presents a graph representing how the energy emitted per unit area per second, or the intensity of...

The video discusses how stars are classified based on their color and surface temperature. The narrator explains the concept of luminosity, which is the total energy emitted per second by a star, and how it differs between different...

Wave Behaviour | Waves | Physics | FuseSchool



How do waves behave? Badly? In this video we are going to look at how light and sound waves behave. Before we start, you should know that waves can be...

Plant Physiology and Chemistry Set: 7. This clip explains how light causes the release of the hormone auxin, which affects the growth and movement of plants.

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...

We see the colors of the microcosmos every single week, but let's stop and ask why our some microbes are bright green, while others are a golden brown.

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...

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...

An overview of the instruments onboard the Webb Telescope: the Near-Infrared Camera (NIRCam), Near-Infrared Spectrograph (NIRSpec), Mid-Infrared Instrument (MIRI), and the Fine Guidance Sensor/Near-Infrared Imager and...

Vitamin A Functions and Retinoid Cycle

A feature from NASA’s Ames Research Center in Silicon Valley originally posted on January 5, 2017.

The Chlorophyll Cycle

Soon to be operating from the International Space Station, NASA’s Earth Surface Mineral Dust Source Investigation (EMIT) mission will comprehensively measure the mineral composition of Earth’s mineral dust source regions to help...

Why wasn't it Hubble that imaged M87*, or Messier 87's supermassive black hole? Is the Event Horizon Telescope more powerful?

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...

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...

A team from NASA's Goddard Space Flight Center in Greenbelt, Maryland, is developing a new, third-generation facility science instrument for the Stratospheric Observatory for Infrared Astronomy, SOFIA.



The High...

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...

The Cassini-Huygens mission arrived at Saturn in 2004, beginning an epic thirteen-year tour of the ringed planet and its many moons. Cassini and its companion probe, Huygens, were an international collaboration between NASA and...

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...

In this video, you will learn how rainbows are formed through the behavior of light waves. Sunlight, composed of different wavelengths, enters raindrops, causing the light to split into a multitude of colors. As the light refracts and...

Chameleons are fancy lizards. They can move and focus each eye independently, they catch food with super long tongues, and they change colors! And if all that wasn't enough, new research has added something bizarre to their already...

It explains ultrasound and its applications.