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If the sun instantly switched off like a light bulb, it would take almost 8 and a half minutes before humans on Earth realized what happened. Light travels at the fastest speed there is, but it still takes almost 500 seconds to get to Earth. This means the sunlight that reaches Earth is old. How is that possible? It is due to the concept of random walks. Part of the “It’s Okay to Be Smart” series.
(Source: DCMP)
The ocean is full of various species of sharks and rays. In this episode, host Emily Graslie takes a look at some of the more unique examples of these fish. Part of "The Brain Scoop" series.
The scientists will explore the color spectrum and explain why humans cannot see the whole spectrum. They will also create a solar oven using aluminum foil. Part of the House of Science Series.
Bill Nye takes on Jupiter's deadly radiation. Jupiter produces the radiation equivalent of 100 million X-rays. Nye explains how NASA protects the instruments on the “Juno” spacecraft from this incredibly harsh environment. Part of the “Why With Nye” series.
Dr. Michelle Thaller explains infrared light. Due to its longer wavelengths than those of visible light, infrared light is invisible to the human eye. However, special equipment exists that makes these wavelengths visible. Part of the "Ask an Astronomer" series.
Josh Landis and Mitch Butler discuss metamaterials, a type of nanotechnology. These materials can theoretically make objects disappear from plain sight. This cloaking technology has a wide range of applications and could forever change the view of the world. Part of the Fast Draw Series.
The sun's powerful, warm rays light up the sky with brilliant color and heat. The changing cycles of the sun can affect the earth and its living organisms. The sun is similar to a living organism-just as humans are born, grow older, and die, so too will the sun. When this happens, the rest of the solar system will have no future.
The Earth has been knocked off its axis, and the seasons are changing rapidly. Superhero Autumn Ray has to return the Earth's axis to its correct angle. As she works to slow the change of seasons, she explains the relationship between the tilt of the Earth's axis and the seasons. Part of "The Science of Climate" series.
Smalltooth sawfish have been around for over 50 million years, but today they are threatened. Its toothed rostrum can easily become entangled in fishing lines, but anglers are learning how to handle them for a safe release. Part of the "Endangered Ocean" series.
The temperature of the Earth is dropping, and superhero Autumn Ray must find a safe way to heat the planet. At first she thought the answer was to increase the amount of greenhouse gases, but Dr. Mother Nature tells her there has to be a safe balance of gases to regulate the temperature of the Earth. Part of "The Science of Climate" series.
Part of "The Living Oceans" series. Reveals the habits and behavior of night-spawning coral, manta rays, lobsters, white-tipped sharks, cuttlefish, Humboldt squid, and opalescent squid. Shows the mysteries of ocean ecology in the annual spawning of coral, the molting of lobsters, the feeding habits of sharks and cuttlefish, and the deadly attacks of squid. Captures the death of thousands of opalescent squid as they lay their eggs, and then die in vast numbers.
From a table at a bar, on a corner of the city of Buenos Aires, we discovered the nature of some of the “wave motion phenomenon” that surrounds us. Some of these were radio and TV waves or the ones from the microwave in the kitchen, solar light, X-rays and cosmic waves.
Beginning with Alchemy's attempt to find the recipe for gold, scientists have strived to unearth the basic building blocks of our world. These building blocks became smaller and smaller as scientists including Isaac Newton and Albert Einstein studied the world. From elements, to the atom, to subatomic particles, the study of our natural world has led to inventions both deadly and fantastic, including X-Rays, MRIs, calculus, and the atomic bomb.
The eye is one of each human's major sense organs. It gathers light information and transforms it into a signal that is used by the brain to formulate an appropriate response. How does this process work? What are the structures involved, and what do they do? These questions are answered using a unique, integrated approach that combines the anatomy and function of the eye. Includes detailed footage of the dissection of the bovine eye.
In less than a second a sandfish lizard can dig its way into the sand and disappear. The sandfish's slithering moves are inspiring new robotic moves that could one day help search and rescue crews find survivors in piles of rubble left from disasters. With support from the National Science Foundation, physicist Daniel Goldman and his team at Georgia Tech are studying the lizard’s movements, using x-rays to track it underground. Their findings will contribute to engineering designs for deployable robots that could one day help canine search and rescue teams find survivors more quickly.
A mutagen is any agent (physical, chemical, or biological) capable of altering the structure of DNA within human cells. This program explores how some mutations are a natural process resulting from errors in the copying and repair of DNA and how some mutagens naturally exist in the world (e.g., UV radiation, cosmic rays, and some radioactive isotopes). Others are specific chemicals that have been synthesized for use in manufacturing or other industries. Mutagens may also arise during the metabolism of certain foods. In many cases mutagens may also lead to the development of cancers.
Gabriela, Manuel and Leonardo are three friends who accidentally start a rocket that takes them to space. Their journey through space takes them to different planets and strange worlds. Throughout their journey, they have the help of Maqui, an on-board computer. Maqui helps them learn about the universe. From the spaceship, Leo sees some very strong rays coming from a sun. Afraid that something would explode, they consulted with Maqui. She tells them that the temperature outside is very dangerous. She also warns that a solar storm can start at any moment.
As scientists delved deep into the atom, into the very heart of matter, they unraveled nature's most shocking secrets. They had to abandon everything they believed in and create a whole new science, which today underpins the whole of physics, chemistry, biology, and maybe even life itself. Tells a story of great geniuses, like Albert Einstein and Werner Heisenberg who were driven by their thirst for knowledge and glory. It's a story of false starts and conflicts, ambition, and revelation, a story which leads us through some of the most exciting and exhilarating ideas ever conceived of by the human race.
Visible light, which can be seen with human eyes, comprises a small sliver of the electromagnetic spectrum. The rest of the spectrum, from short wavelength gamma rays to long-wavelength radio waves, requires special instruments to detect. ALMA uses an array of radio telescopes to detect and study radio waves from space. ALMA is an advanced tool for studying very old stars and galaxies. These objects now are seen at great cosmic distances, with most of their light stretched out to millimeter and sub-millimeter wavelengths by the expansion of the universe. ALMA provides the unprecedented ability to study the processes of star and planet formation.
Moko is an explorer. As he travels the world continent by continent, he makes many friends and discovers many natural phenomena which sometimes delight him, and other times scare him. Each animated episode recounts an adventure and takes an "original story" approach to explaining these natural phenomena. In this episode, Moko is enjoying Alarick's country. The warm weather has returned, the trees have flowered and food is plentiful. Moko thinks now the cold has passed life here will be easy. An old man tells him that the cold will return, but Moko doesn't want to believe him and lets time pass. He sees the beauty of the changing seasons and one morning...winter!
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