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UBeam
SonicEnergy (previously uBeam) is a U.S. company that claims to be developing a wireless charging system to work via ultrasound. Scientists have criticised the plausibility of this proposal. History SonicEnergy was founded in 2011 by Meredith Perry. SonicEnergy won University of Pennsylvania's invention competition, PennVention, in April 2011, and demonstrated the first prototype of the technology at ''The Wall Street Journal's'' All Things Digital Conference, D9, in May 2011. SonicEnergy received $26 million in investment from venture capitalists and investors including Andreessen Horowitz, Upfront Ventures, Founders Fund as well as billionaire Mark Cuban and former Yahoo! Inc. Chief Executive Marissa Mayer. By 2016, all of SonicEnergy's original engineering team had left the company, with some engineers leaving before their stocks had vested. Axios reported that SonicEnergy privately demonstrated a working prototype of the technology at the Upfront Summit on February 2, 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meredith Perry
Meredith Perry is an American inventor, entrepreneur, and scientist, most well known for the invention of uBeam, a wireless power transmission, wireless charging system based on ultrasound. Biography Career Perry studied paleobiology and astrobiology at the University of Pennsylvania and conducted astrobiology research with the Ames Research Center, NASA Ames Research Center and the NASA Astrobiology Institute. She is a NASA Astrobiology Institute Research Scholarship Recipient and NASA Pennsylvania Space Grant Recipient. She co-authored two astrobiology research papers with Christopher McKay of NASA Ames Research Center. Perry won the University of Pennsylvania's Invention Competition, "PennVention" in 2011 for her ultrasonic wireless power transmission system, which she named "uBeam". Perry founded sonicEnergy, uBeam in 2011 and raised $40M from Founders Fund, Andreessen Horowitz, Mark Cuban, Marissa Mayer and other prominent investors. She stepped down as CEO in 2018 after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Energy Transfer
Wireless power transfer (WPT), wireless power transmission, wireless energy transmission (WET), or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system, a transmitter device, driven by electric power from a power source, generates a time-varying electromagnetic field, which transmits power across space to a receiver device, which extracts power from the field and supplies it to an electrical load. The technology of wireless power transmission can eliminate the use of the wires and batteries, thus increasing the mobility, convenience, and safety of an electronic device for all users. Wireless power transfer is useful to power electrical devices where interconnecting wires are inconvenient, hazardous, or are not possible. Wireless power techniques mainly fall into two categories, near field and far-field. In '' near field'' or ''non-radiative'' techniques, power is transferred over sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marissa Mayer
Marissa Ann Mayer (; born May 30, 1975) is an American businesswoman and investor. She is an information technology executive, and co-founder of Sunshine Contacts. Mayer formerly served as the president and chief executive officer of Yahoo!, a position she held beginning in July 2012. It was announced in January 2017 that she would step down from the company's board upon the sale of Yahoo!'s operating business to Verizon Communications for $4.8 billion. She did not join the newly combined company, now called Verizon Media (formerly Oath), and she announced her resignation on June 13, 2017. She is a graduate of Stanford University and was a long-time executive, usability leader and key spokeswoman for Google (employee #20). Early life Mayer was born in Wausau, Wisconsin, the daughter of Margaret Mayer, an art teacher of Finnish descent, English title: "Google vice president visits the land of her ancestors". and Michael Mayer, an environmental engineer who worked for water compan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CNBC
CNBC (formerly Consumer News and Business Channel) is an American basic cable business news channel. It provides business news programming on weekdays from 5:00 a.m. to 7:00 p.m., Eastern Time, while broadcasting talk shows, investigative reports, documentaries, infomercials, reality shows, and other programs at all other times. Along with Fox Business and Bloomberg Television, it is one of the three major business news channels. It also operates a website and mobile apps, whereby users can watch the channel via streaming media, and which provide some content that is only accessible to paid subscribers. CNBC content is available on demand on smart speakers including Amazon Echo devices with Amazon Alexa, Google Home and app devices with Google Assistant, and on Apple Siri voice interfaces including iPhones. Many CNBC TV shows are available as podcasts for on-demand listening. Graphics are designed by Sweden-based Magoo 3D studios. CNBC is a divisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David L
David (; , "beloved one") (traditional spelling), , ''Dāwūd''; grc-koi, Δαυΐδ, Dauíd; la, Davidus, David; gez , ዳዊት, ''Dawit''; xcl, Դաւիթ, ''Dawitʿ''; cu, Давíдъ, ''Davidŭ''; possibly meaning "beloved one". was, according to the Hebrew Bible, the third king of the United Kingdom of Israel. In the Books of Samuel, he is described as a young shepherd and harpist who gains fame by slaying Goliath, a champion of the Philistines, in southern Canaan. David becomes a favourite of Saul, the first king of Israel; he also forges a notably close friendship with Jonathan, a son of Saul. However, under the paranoia that David is seeking to usurp the throne, Saul attempts to kill David, forcing the latter to go into hiding and effectively operate as a fugitive for several years. After Saul and Jonathan are both killed in battle against the Philistines, a 30-year-old David is anointed king over all of Israel and Judah. Following his rise to power, David ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEEE Spectrum
''IEEE Spectrum'' is a magazine edited by the Institute of Electrical and Electronics Engineers. The first issue of ''IEEE Spectrum'' was published in January 1964 as a successor to ''Electrical Engineering''. The magazine contains peer-reviewed articles about technology and science trends affecting business and society. In 2010, ''IEEE Spectrum'' was the recipient of ''Utne Reader'' magazine's Utne Independent Press Award for Science/Technology Coverage. In 2012, ''IEEE Spectrum'' was selected as the winner of the National Magazine Awards' "General Excellence Among Thought Leader Magazines" category. References External links * {{Official website, https://spectrum.ieee.org/ Monthly magazines published in the United States Science and technology magazines published in the United States Engineering magazines Spectrum A spectrum (plural ''spectra'' or ''spectrums'') is a condition that is not limited to a specific set of values but can vary, without gaps, across a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phased Array
In antenna theory, a phased array usually means an electronically scanned array, a computer-controlled array of antennas which creates a beam of radio waves that can be electronically steered to point in different directions without moving the antennas. In a simple array antenna, the radio frequency current from the transmitter is fed to multiple individual antenna elements with the proper phase relationship so that the radio waves from the separate elements combine ( superpose) to form beams, to increase power radiated in desired directions and suppress radiation in undesired directions. In a phased array, the power from the transmitter is fed to the radiating elements through devices called ''phase shifters'', controlled by a computer system, which can alter the phase or signal delay electronically, thus steering the beam of radio waves to a different direction. Since the size of an antenna array must extend many wavelengths to achieve the high gain needed for narrow bea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sound Pressure
Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave. In air, sound pressure can be measured using a microphone, and in water with a hydrophone. The SI unit of sound pressure is the pascal (Pa). Mathematical definition A sound wave in a transmission medium causes a deviation (sound pressure, a ''dynamic'' pressure) in the local ambient pressure, a ''static'' pressure. Sound pressure, denoted ''p'', is defined by p_\text = p_\text + p, where * ''p''total is the total pressure, * ''p''stat is the static pressure. Sound measurements Sound intensity In a sound wave, the complementary variable to sound pressure is the particle velocity. Together, they determine the sound intensity of the wave. ''Sound intensity'', denoted I and measured in W· m−2 in SI units, is defined by \mathbf I = p \mathbf v, where * ''p'' is the sound pressure, * v is the particle velocity. Acoustic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Business-to-business
Business-to-business (B2B or, in some countries, BtoB) is a situation where one business makes a commercial transaction with another. This typically occurs when: * A business is sourcing materials for their production process for output (e.g., a food manufacturer purchasing salt), i.e. providing raw material to the other company that will produce output. * A business needs the services of another for operational reasons (e.g., a food manufacturer employing an accountancy firm to audit their finances). * A business re-sells goods and services produced by others (e.g., a retailer buying the end product from the food manufacturer). B2B is often contrasted with business-to-consumer (B2C). In B2B commerce, it is often the case that the parties to the relationship have comparable negotiating power, and even when they do not, each party typically involves professional staff and legal counsel in the negotiation of terms, whereas B2C is shaped to a far greater degree by economic impli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USA Today
''USA Today'' (stylized in all uppercase) is an American daily middle-market newspaper and news broadcasting company. Founded by Al Neuharth on September 15, 1982, the newspaper operates from Gannett's corporate headquarters in Tysons, Virginia. Its newspaper is printed at 37 sites across the United States and at five additional sites internationally. The paper's dynamic design influenced the style of local, regional, and national newspapers worldwide through its use of concise reports, colorized images, Infographic, informational graphics, and inclusion of popular culture stories, among other distinct features. With an average print circulation of 159,233 as of 2022, a digital-only subscriber base of 504,000 as of 2019, and an approximate daily readership of 2.6 million, ''USA Today'' is ranked as the first by circulation on the list of newspapers in the United States. It has been shown to maintain a generally center-left audience, in regards to political persuasion. ''US ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samsung Galaxy S7
The Samsung Galaxy S7, Samsung Galaxy S7 Edge and Samsung Galaxy S7 Active are Android-based smartphones manufactured, released and marketed by Samsung Electronics. The S7 series serves as the successor to the Galaxy S6, S6 Edge, S6 Edge+ and S6 Active released in 2015. The S7 and S7 Edge were officially unveiled on 21 February 2016 during a Samsung press conference at Mobile World Congress, with a European and North American release on 11 March 2016. The S7 Active was unveiled on 4 June 2016, and released on AT&T in the United States on 10 June 2016. The Galaxy S7 is an evolution of the prior year's model, with upgraded hardware, design refinements, and the restoration of features removed from the Galaxy S6, such as IP certification for water and dust resistance, as well as expandable storage with a MicroSD card. Succeeding the S6 and S6 Edge+, respectively, the S7 is produced in a standard model with a display size of as well as an Edge variant whose display is curved along ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IPhone 7
The iPhone 7 and iPhone 7 Plus are smartphones that were designed, developed, and marketed by Apple Inc. They are the tenth generation of the iPhone. They were announced on September 7, 2016, at the Bill Graham Civic Auditorium in San Francisco by Apple CEO Tim Cook, and were released on September 16, 2016, succeeding the iPhone 6, iPhone 6 Plus, iPhone 6S and iPhone 6S Plus as the flagship devices in the iPhone series. Apple also released the iPhone 7 and iPhone 7 Plus in numerous countries worldwide throughout September and October 2016. They were succeeded as flagship devices by the iPhone 8 and iPhone 8 Plus on September 12, 2017, and were discontinued with the announcement of the iPhone 11 and iPhone 11 Pro on September 10, 2019. The iPhone 7's overall design is similar to iPhone 6S and iPhone 6. Changes introduced included new color options (Matte Black and Jet Black), water and dust resistance, a new capacitive, static home button, revised antenna bands, and the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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