This video shows images of the sky along the Milky Way that were made using radio waves through gamma waves. The video discusses how neutral hydrogen can emit radio waves that have a wavelength of 21 cm. The video describes how astronomers use the 21 cm emission line to map out where hydrogen is concentrated in our galaxy. Differential rotation is discussed. This material relates to Chpater 14 of astronomynotes.com. Introductory Astronomy Prof. Greg Clements
Dielectric wire Modern radio technology starts employing higher frequencies. Ultra-high frequency is used in television. They correspond to meter long waves. Such waves are too long for radio detection since it employs centimeter waves. Even shorter waves (just several mm) are also employed. Microwave frequency has some peculiarities, different from high and ultra-high ones. One of its amazing properties is the following: the energy of centimeter waves can be transferred via line made of insulating material -- dielectric. It one makes wave conductor as a dielectric core that has low losses and high dielectric capacitivity, then electromagnetic energy will spread along such wave conductor as if it was made of a metal pipe. Such dielectric wave conductors with 1-3 cm long waves are sometimes even more advantageous and convenient than metal ones. Now we are not surprised to know that you can employ dielectric (not metal) antenna for centimeter waves. Such antenna is a small dielectric core thickened on one side and tapering on the other side. Electrical power is delivered to the antenna on its thick side. Such antenna will have good directional effect from a thick to a thin side. Properties of microwave frequency make you abandon old-fashioned ideas and concepts.
5G applications may utilize the crowded sub 6 GHz spectrum, as well as centimeter-wave and millimeter-wave spectrum. Operating in crowded spectrum poses questions such as how will sub-6 GHz candidate 5G waveforms coexist and interact with legacy 3G, 4G, and PAN waveforms? Can the 28 GHz frequency band be shared between satellite waveforms and candidate 5G waveforms? This video will discuss some of the candidate 5G waveforms being proposed and examine 5G coexistence case studies for 28 GHz applications.
109 - Wave Interference In this video Paul Andersen explains how waves interact with objects and with other waves. When a wave hits a fixed object it will be reflected and inverted. When a wave hits a free object it will be reflected without being inverted. Waves pass through other waves but can show either constructive or destructive interference. Traveling waves confined to a boundary will creating standing waves through interference. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: Kuiper, Pieter. English: Reflection of a Single Pulse on a String at a Fixed End and at a Free End. The Red Line Is Used for Constructing an “Image Wave”. Superposition with a Pulse of Opposite Sign Keeps the Endpoint Fixed., January 22, 2010. Own work. http://commons.wikimedia.org/wiki/File:Reflection_at_fixed_and_free_string_ends_single_pulse.gif. Martin-rnr, Tanrek jpg: Thierry CaroBig-eared-townsend-fledermaus jpg: US GovernmentBottlenose_dolphin_mother_and_juvenile jpg: US GovernmentAerodramusMaximus Wokoti jpg: wokotiderivative work: Echolocating Animals. Clockwise Starting with the Dolphin: Tursiops Truncatus, Tenrec Ecaudatus, Aerodramus Maximus, Corynorhinus Townsendii., May 21, 2011. Tanrek.jpg Big-eared-townsend-fledermaus.jpg Bottlenose_dolphin_mother_and_juvenile.jpg AerodramusMaximus.Wokoti.jpg. http://commons.wikimedia.org/wiki/File:Echolocating_animals.JPG. “Superposition Principle.” Wikipedia, the Free Encyclopedia, April 1, 2015. http://en.wikipedia.org/w/index.php?title=Superposition_principle&oldid=654440372. Svensson, Håkan. English: Gustaf Vasakyrkan. Organ., July 7, 2003. Own work: No correction has been done to the picture. http://commons.wikimedia.org/wiki/File:GustafVasa_Organ.jpg. “Wave on a String.” PhET. Accessed April 16, 2015. https://phet.colorado.edu/en/simulation/wave-on-a-string.
Rohde & Schwarz in cooperation with Fraunhofer HHI realize a novel channel sounding solution. The solution is based on flexible off-the-shelf test instruments and ready to support the ongoing 5G channel modeling work in 3GPP standardization and in various research projects worldwide. The test setup, demonstrated in this video, operates at 82.5 GHz and is based on the R&S®AFQ100A baseband generator, the R&S®SMW200A vector signal generator and the R&S®FSW signal and spectrum analyzer. The test instruments flexibility in absolute frequency and wide bandwidth support makes this solution equally applicable for future development tasks for 5G. More: https://www.rohde-schwarz.com/5G
This subliminal contains positive suggestions to get: - Grow 1 cm of Hair Everyday - Super fast results - Long hair - Stylish hair - Healthy hair - Strong hair - Soft hair -------------------------------------------- Photo courtesy: Photo belongs to respective owner Music courtesy: "Rains Will Fall" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License https://goo.gl/Voow1e -------------------------------------------- Dear friends, I am receiving hundreds of comments and messages everyday, it is not possible to reply every message, please do not mind if I couldn't reply your message. There are 1000+ pending requests so please do not send new requests. There are more than 375 videos on this channel and I am adding new subliminals regularly. Sooner or later you will get the subliminal you want, please be patient. For common questions read FAQ on my website. - For custom subliminal: http://hypnodaddy.com - Twitter: https://twitter.com/HypnoDaddy9 - Facebook: https://web.facebook.com/hypnodaddy Binaural beat 4Hz This recording is designed to engage your conscious and subconscious mind to get the changes you desire faster. It is important to use headphones while listening to this recording because different messages are delivered to your left and right ears which will make your subconscious more receptive. If you find this subliminal helpful then please Like and Share..! Subscribe the channel for updates! DISCLAIMER: This video is not a substitute for medical treatment!
5G applications may utilize the crowded sub-6 GHz spectrum, as well as centimeter-wave and millimeter-wave spectrum. Operating in crowded spectrum poses questions such as how will sub-6 GHz candidate 5G waveforms coexist and interact with legacy 3G, 4G, and PAN waveforms? Can the 28 GHz frequency band be shared between satellite waveforms and candidate 5G waveforms? This video will show some of the candidate 5G waveforms being proposed and examine 5G coexistence case studies for sub-6 GHz applications.
Subscribe to join the Film Theorists! ►► http://bit.ly/1dI8VBH Are VIDEO GAMES the future of movies? ► http://bit.ly/1I2qc5b Hey, we did a collab on DBZ with LORE and it was awesome! Check out their video here ► http://bit.ly/1LTDz81 This Dragon Ball Z theory has been one one of the most requested in the history of BOTH the Game Theorists and Film Theorists and now it's finally HERE! the Kamehameha Wave is the most iconic piece of DBZ lore out there and it took some serious science to explain how we could bring this incredible power out of the TV series and into the real world! And finally, a big thanks to ALL the Theorists who requested this one--meeting your challenge on this one was super tough, but it's become one of my favorite in the series! Like the theme song? Thanks to Carf Darko! https://www.youtube.com/user/carfmobile SOCIAL MEDIA: Twitter: @MatPatGT Facebook: facebook.com/GameTheorists Instagram: instagram.com/matpatgt MORE FILM THEORY! Harry Potter ISN'T the chosen one? ►http://bit.ly/1HDwQtH Can Dr. Who's Doctor be a HUMAN? ► http://bit.ly/1AGes5S The TRUTH about Jon Snow ► http://bit.ly/1dHmLUW How to Win an Oscar for BEST ACTOR! ► http://bit.ly/1SRa0a4 How to Win an Oscar for BEST PICTURE! ► http://bit.ly/1daa1oQ
Corner Reflector A corner reflector is a passive device that looks like a rectangular tetrahedron with perpendicular planes. There exist corner reflectors for radio waves and optical corner reflectors. So what is the main peculiarity of wave reflection from a device like this one? The radiation falling onto the corner reflector is always reflected in the strictly reverse direction. A ray that falls onto one of the planes at a small angle to the bisector of the trihedral angle, is reflected thrice and then returned in the direction of the radiation source. An omnidirectional reflector can be built using eight corner reflectors facing different directions. The sides of the radiolocating reflector are made of metal or metal lath. Such a reflecting target has a highly efficient dispersion area. If the leg of reflector's triangle is equal to one meter, this area is equivalent to the efficient reflection area of a small plane when exposed to VHF band, and to that of a large vessel if reflected are the centimeter waves. That's why corner reflectors are often used for applications requiring response from a certain object, like in radio navigation - on navigation beacons, airfields, and rescue equipment. They also come in handy in checking radar operation, conducting certain measurements and application of military technologies. The planes of optical reflectors are usually made of glass and plastic. To increase the reflection area such devices are as a rule built of a large number of single tetrahedrons located in one plane. They are used in all kinds of various fields. For example, the angle reflector mounted on the Moon helped to determine the distance to it to a 40 cm accuracy using a simple laser. An example of the corner reflector that every one of us sees every single day is a regular retroreflector.
A how to video on How To Determine The Diameter Of A Circle that will improve your math skills. Learn how to get good at math from Videojug's hand-picked professionals. Subscribe! http://www.youtube.com/subscription_center?add_user=videojugeducation Check Out Our Channel Page: http://www.youtube.com/user/videojugeducation Like Us On Facebook! https://www.facebook.com/videojug Follow Us On Twitter! http://www.twitter.com/videojug Watch This and Other Related films here: http://www.videojug.com/film/how-to-find-the-diameter-of-a-circle