презентация всероссийские проверочные работы 4 класс
Главное меню:
Интересное
презентация всероссийские проверочные работы 4 класс, What does Wi-Fi stand for? - New Scientist, Science questions | Page 2 | New Scientist, Orcas are bringing humans gifts – what does it mean?, What does it mean when an orca wants to share its lunch with you?, Fifty years of DARPA: Hits, misses and ones to watch, Colossal scientist now admits they haven’t really made dire wolves, The FBI is getting new technology to see through walls.
What does Wi-Fi stand for?By Facebook / MetaTwitter / X iconLinkedinRedditEmailAndriy Onufriyenko / Getty ImagesWi-Fi became a ubiquitous technology in laptops more than a decade ago and the phrase is in daily use. Now the wireless networking technology can be found in our watches, phones, televisions and smart speakers. We know what it means, but what does Wi-Fi stand for?You may have read, or made an educated guess, that Wi-Fi stands for “wireless fidelity” just as Hi-Fi stands for “high fidelity”. It would make sense but you’d be wrong.Phil Belanger, a founding member of the Wi-Fi Alliance, : “Wi-Fi doesn’t stand for anything. It is not an acronym. There is no meaning.”The simple truth is that the organisation needed a name for their standard that would be easier to remember than “IEEE 802.11b Direct Sequence”. So they hired the marketing agency Interbrand to name it and were given the choice of 10 options.AdvertisementWeb3 promises to reclaim the internet from tech giants – will it work?There's a lot of hype surrounding the idea of a decentralised version of the internet that would give more power to ordinary users. Here's what it would take to make it happenBelanger does concede that the organisation did, in the early days of Wi-Fi, include the tag line “The Standard for Wireless Fidelity”. This was because board members found it hard to imagine having a name that didn’t mean anything and wanted to subsequently explain the name that had been invented for them, but Belanger says it was a mistake to do it, and the line was quickly dropped.What is Wi-Fi?For many people the term Wi-Fi is now synonymous with “Internet”. But to be accurate it’s just a wireless connection standard. If you’re using a wireless device then Wi-Fi may be bringing you your internet connection, but it is not the internet.Wi-Fi is essentially a very advanced digital radio using frequencies between 2 gigahertz and 5 gigahertz in the electromagnetic spectrum, which is around the same area as microwave ovens.The metaverse: What is it, will it work, and does anyone want it?Since its rebrand as “Meta”, Facebook has been throwing its considerable weight behind the idea of an immersive virtual reality world. Here’s everything you need to knowWho invented Wi-Fi?A wireless network called ALOHAnet was created in 1971 that connected the Great Hawaiin islands. Ethernet and Wi-Fi can trace some of their history back to that.But it was in 1991 that NCR Corporation (which began as a cash register company) and AT&T (which began as a phone company) created the precursor to Wi-Fi as a way of linking cash registers called WaveLAN.It became so popular that eventually the Institute of Electrical and Electronics Engineers (IEEE) created the 802.11 standard that we now know as Wi-Fi. In 1999, the formed as a trade association to hold the reins of the Wi-Fi trademark.AdvertisementSign up to our weekly newsletterReceive a weekly dose of discovery in your inbox! , We know what it means, but what does Wi-Fi stand for? You may have read, or made an educated guess, that Wi-Fi stands for “wireless fidelity” just as Hi-Fi stands for “high fidelity”., Science questions What came first, the chicken or the egg? Where is the coldest place on Earth? Has anyone ever died in space? Get answers to your burning science questions on our 'Questions' page .
Life Orcas are bringing humans gifts – what does it mean? Researchers have documented orcas seemingly gifting rays, seals and fish to scientists and divers, which could suggest they have theory , Life What does it mean when an orca wants to share its lunch with you? Researchers have documented orcas seemingly gifting rays, seals and fish to scientists and divers, which could suggest they , The F-117 Nighthawk stealth fighter was the first stealth aircraft to be used operationally Founded to protect the US against "technological surprise", the agency has achieved some spectacular , Despite a huge media fanfare in which Colossal Biosciences claimed to have resurrected the extinct dire wolf, the company's chief scientist now concedes that the animals are merely modified grey , A lunchbox-sized radar system could help the FBI detect moving or stationary people by peering through walls via radio waves, Physics We are closer than ever to finally proving the multiverse exists One hundred years ago, we discovered there were other galaxies beyond our own. Now, we might be on the verge of another .