In mathematics, a Costas array can be regarded geometrically as a set of n points, each at the center of a square in an n×n square tiling such that each row or column contains only one point, and all of the n(n − 1)/2 displacement vectors between each pair of dots are distinct. This results in an ideal "thumbtack" auto-ambiguity function, making the arrays useful in applications such as sonar and radar. Costas arrays can be regarded as two-dimensional cousins of the one-dimensional Golomb ruler construction, and, as well as being of mathematical interest, have similar applications in experimental design and phased array radar engineering. Costas arrays are named after John P. Costas, who first wrote about them in a 1965 technical report. Independently, Edgar Gilbert also wrote about them in the same year, publishing what is now known as the logarithmic Welch method of constructing Costas arrays. (Wikipedia).
Solar panel performance shoot-out - Part 3
This is a performance test between two 55 watt solar panels, one is a monocrystalline and the other is an Amorphous / thin film panel.
From playlist Solar Panel Reviews, Testing and Experiments
Astronomy - Ch. 6: Telescopes (17 of 21) Radio Telescopes (The Beginning)
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the beginnings of the radio telescopes.
From playlist ASTRONOMY 6 TELESCOPES
Valuing Nature in Personal Practice and Societal Transformation with Gretchen C. Daily
An awakening is underway, to the values of nature and the risks and devastating costs of its loss. Stanford Professor Gretchen Daily will describe new science to quantify nature’s benefits to people and integrate them into decision-making – in planning, policy, finance, and practice. Gretc
From playlist Contemplation By Design
NASA's newest X-ray telescope will have a lengthy structure that unfolds in space, allowing it to see high-energy objects like feeding black holes.
From playlist NuSTAR
Astronomy - Ch. 6: Telescopes (11 of 25) The Newtonian Reflecting Telescope
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the Newtonian reflecting telescopes.
From playlist ASTRONOMY 6 TELESCOPES
Solar panel performance shoot-out - Part 4
A little update on the performance test between two 55 watt solar panels, one is a monocrystalline and the other is an Amorphous / thin film panel.
From playlist Solar Panel Reviews, Testing and Experiments
360 Video: Site of the world's largest solar telescope
The National Solar Observatory on Maui in Hawaii is set to open in 2018. Learn more: http://www.sciencemag.org/news/2017/08/how-world-s-largest-solar-telescope-rose-maui-while-nearby-protests-derailed-larger
From playlist 360 video
Solar panel performance shoot-out - Part 2
This is a performance test between two 55 watt solar panels, one is a mono-crystalline and the other is an Amorphous / thin film panel.
From playlist Solar Panel Reviews, Testing and Experiments
How To Create Game Server In Visual Basic .NET & Own Database Structure | Session 04 | #gamedev
Don’t forget to subscribe! In this project series, you will learn to create the game server in Visual Basic .Net and your own database structure. Do you want to get into networking, and want to create your very own game server? Then this video series is exactly what you want to watch!
From playlist Create Game Server In Visual Basic .NET & Own Database Structure
What are Eclipses? || Solar Eclipse || Lunar Eclipse || Astronomy
Our Socratica Astronomy series is back! Bookmark the playlist here: ✷ https://socratica.link/Astro_Playlist We also ask you join our STELLAR email list so we can notify you when new videos go live: ✷ https://snu.socratica.com/astronomy (Don’t rely on the YT algorithm to show you what
From playlist Astronomy
Open Space: June 4, 2018, Live QA with Fraser and Guest Dr. Paul Sutter
Paul was busy last week, but now he's ready to join me for an hour answering your mind bending questions about space and astronomy. Bring all your complex questions about dark matter, black holes and the Big Bang and he'll sort it all out. Check out Paul's channel: https://www.youtube.com
From playlist Open Space - Live QA with Fraser Cain and Guests
Linking Social and Ecological Determinants to Public Health
A public health seminar recorded on April 4, 2011. Full title of Lecture: "Linking Social and Ecological Determinants to Public Health: Case Studies of Disparities in Conservation and Development in Costa Rica," delivered by Bernardo Aguilar-Gonzalez. For decades Costa Rica has enjoyed a
From playlist Graduate Seminar in Public Health 2010-2011
How To Create Game Server In Visual Basic.Net | Session 04 | #gamedev
Don’t forget to subscribe! In this project series, you will learn to create a game server in Visual Basic.Net If you ever wanted to create your very own MMORPG or Online game and you don't know how to start and you are still a beginner in game development you are at the correct place. In
From playlist Create Game Server In Visual Basic.Net
How Costa Rica runs on 100% renewable electricity
Did you know that more than 99 percent of Costa Rica’s electricity came from renewables in 2020? Of this electricity, about 72 percent was generated by hydropower, 15 percent from geothermal energy, 12 percent from wind, and less than 1 percent from solar and biomass. Costa Rica is very l
From playlist Radical Innovations
Quite a lot of LEDs...! Now on public display in London at http://www.thecrystal.org/_html/
From playlist Projects & Installations
Banana Wars - US Marines Fight For Fruit Companies (Documentary)
Sign up for Curiosity Stream and get Nebula bundled in and SAVE 26%: https://curiositystream.com/thegreatwar US involvement in Central America dated back to the first attempt to build the Panama Canal. And in accordance to the Monroe Doctrine was expanded in the 20th century too. US Marin
From playlist All Videos from THE GREAT WAR - chronological order
tqdm - A Fast, Extensible Progress Bar for Python and CLI EVENT: PyData London Meetup #56 SPEAKER: Casper da Costa-Luis PUBLICATION PERMISSIONS: PyData provided Coding Tech with the permission to republish this video.
From playlist Python
U06_L2_T2_we1 Mixture problems 1 Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
From playlist Algebra I Worked Examples
Live from the ATLAS Experiment
Find out more about the ATLAS Experiment and recent upgrades of the detector.
From playlist 360° videos
Rehabilitating Baby Sloths in Costa Rica - 360 | National Geographic
Witness the recovery and release of wildlife at the Toucan Rescue Ranch in Costa Rica. ➡ Subscribe: http://bit.ly/NatGeoSubscribe #NationalGeographic #Sloths #360Video About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventur
From playlist Nature & Environment | National Geographic