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Bohr radius

The Bohr radius is a physical constant equal to the most probable distance between the nucleus and the electron in a hydrogen atom in its ground state. It is named after Niels Bohr, due to its role in the Bohr model of an atom, its value is 5.29177210903×10−11 m. In SI units the Bohr radius is: a 0 = 4 π ε 0 ℏ 2 m e e 2 = ℏ m e c α where: a 0 is the Bohr radius, ε 0 is the permittivity of free space, ℏ is the reduced Planck's constant, m e is the electron rest mass, e is the elementary charge, c is the speed of light in vacuum, α is the fine structure constant. In Gaussian units the Bohr radius is a 0 = ℏ 2 m e e 2 According to 2014 CODATA the Bohr radius has a value of 5.2917721067×10−11 m. A derivation of the Bohr radius for the n-th excited state of a Hydrogen-like atom is given on the main page for the Bohr model. In the Bohr model for atomic structure, put forward by Niels Bohr in 1913, electrons orbit a central nucleus under electrostatic attraction; the original derivation posited that electrons have orbital angular momentum in integer multiples of the reduced Planck constant, which matched the observation of discrete energy levels in emission spectra, along with predicting a fixed radius for each of these levels.

In the simplest atom, hydrogen, a single electron orbits the nucleus, its smallest possible orbit, with lowest energy, has an orbital radius equal to the Bohr radius. The Bohr model of the atom was superseded by an electron probability cloud obeying the Schrodinger equation, further complicated by spin and quantum vacuum effects to produce fine structure and hyperfine structure; the Bohr radius formula remains central in atomic physics calculations, due in part to its simple relationship with other fundamental constants. For example, it is the unit of length in atomic units. An important distinction is that the Bohr radius gives the radius with the maximum radial probability density, not its expected radial distance; the expected radial distance is 1.5 times the Bohr radius, as a result of the long tail of the radial wave function. Another important distinction is that in three-dimensional space, the maximum probability density occurs at the location of the nucleus and not at the Bohr radius, whereas the radial probability density peaks at the Bohr radius, i.e. when plotting the probability distribution in its radial dependency.

The Bohr radius of the electron is one of a trio of related units of length, the other two being the Compton wavelength of the electron λ e and the classical electron radius r e. The Bohr radius is built from the electron mass m e, Planck's the electron charge e; the Compton wavelength is built from ℏ and the speed of light c. The classical electron radius is built from c and e. Any one of these three lengths can be written in terms of any other using the fine structure constant α: r e = α λ e 2 π = α 2 a 0; the Bohr radius is about 19,000 times bigger than the classical electron radius. The electron's Compton wavelength is about 20 times smaller than the Bohr radius, the classical electron radius is about 1000 times smaller than the electron's Compton wavelength; the Bohr radius including the effect of reduced mass in the hydrogen atom can be given by the following equations:where: λ p is the Compton wavelength of the proton, λ e is the Compton wavelength of the electron, ℏ is the reduced Planck's constant, α is the fine structure constant, c {\displaystyle c\

Notts + Derby

Notts+Derby is a bus operator providing services in Nottinghamshire and Derbyshire. It is a subsidiary of the Wellglade Group. Notts + Derby operate a number of contracted bus services around Derbyshire. One of their largest contracts is with the University of Derby for services linking students with campuses and other key locations in Derby. Notts+Derby operate Derby College shuttle buses between their 3 main campuses and free shopper services to Tesco and Asda supermarket, the D1 Meteor Park & Ride service is operated; as of December 2019 the fleet consisted of around 90 buses Wright Solars and Optare Solos from within other Wellglade Group subsidiaries including trentbarton. A number of Scania Omnidekkas within the fleet have come from nearby Nottingham City Transport. Company website


Pareh, released internationally as Pareh, Song of the Rice, is a 1936 film from the Dutch East Indies. Directed by the Dutchmen Albert Balink and Mannus Franken, it featured an amateur native cast and starred Raden Mochtar and Soekarsih; the story follows the forbidden love between a farmer's daughter. Balink began work on the film in 1934, working with the Wong brothers, who served as cinematographers, they gathered a budget of 75,000 gulden – several times the budget of other local productions – and brought Franken from the Netherlands to assist in production. The film was edited in the Netherlands after being shot in the Indies; the film was a critical success with European audiences, but disliked by native ones. Pareh resulted in a change in the cinema of Dutch East Indies, Chinese-oriented for several years. Balink found commercial success with Terang Boelan; the American visual anthropologist Karl G. Heider considers Pareh and Terang Boelan the two most important cinematic works from the Dutch East Indies during the 1930s.

Mahmud, a fisherman, is in love with a farmer's daughter. However, local superstition dictates; this seems to prove true after the village leader's keris is stolen, but Mahmud and Wagini are able to unite with the help of his fellow villagers. During 1934 and early 1935, all feature films released in the Dutch East Indies had been produced by The Teng Chun, based on Chinese mythology or martial arts, targeted at low-class audiences ethnic Chinese; this situation was created by the Great Depression, which had led to the Dutch East Indies government collecting higher taxes, advertisers asking for more money, cinemas selling tickets at lower prices. During this period cinemas in the country showed Hollywood productions. Albert Balink, a Dutch journalist, began work on what was to become Pareh in 1934. Unlike The Teng Chun, the inexperienced Balink chose to target his film at Dutch audiences, he brought in two of the Wong brothers, Chinese filmmakers, inactive since making Zuster Theresia in 1932.

The Wongs donated their studio – an old tapioca flour factory – as well as filmmaking equipment. Meanwhile, much of the funding came from other backers. According to the Indonesian film historian Misbach Yusa Biran, the money came from the cinema mogul Buse, while EYE Film Institute records indicate that the film was backed by the Centrale Commissie voor Emigratie en Kolonisatie van Inheemschen and meant to promote migration from Java to Sumatra. Balink and the Wongs spent most of two years compiling the necessary funds, with Balink in charge of general operations as the head of Java Pacific Film, a joint operation. Balink had a clear idea what kind of actor he wanted in the film. Unlike earlier filmmakers in the country, Balink invested time and money in searching for the best locations and actors possible, without considering whether a person was a celebrity. Most of those cast for Pareh had not acted before, including stars Mochtar and Soekarsih; the role of Mahmud was filled when Balink was out with coffee with Joshua and Othniel Wong and saw a young man, tall and handsome – as he expected for the role – driving by.

Balink called the Wongs and they got into their car chased and caught the young man. The man, Mochtar, a Javanese of noble descent, was told to use the title Raden for the film, which he and his family had abandoned. According to the Indonesian anthropologist Albertus Budi Susanto, the emphasis on Mochtar's title was meant as a way to draw a higher-class audience. Artistic direction and some of the screenwriting was handled by Mannus Franken, an avant-garde documentary filmmaker from the Netherlands, whom Balink had brought to the Indies. Franken insisted on including ethnographic shots to better present the local culture to international audiences. Franken took an interest in the documentary and ethnographic aspects of the film, directing the shots for these portions, while the Wongs handled the general shots. According to Biran, this was reflected in the camera angles used. Pareh, recorded on 35 mm film using single-system devices, was brought to the Netherlands for editing. There the original voices of the cast were dubbed by actors in the Netherlands, resulting in stilted language use and heavy Dutch accents.

Though the filmmakers had planned on using gamelan music, the poor quality of the recording equipment in the Indies led to the soundtrack being redone, using European-style music, in the Netherlands. From start to finish the production of Pareh cost 75,000 gulden, 20 times as much as a regular local production. After editing there were 2,061 metres of film, equivalent to 92 minutes of runtime. Pareh was screened in the Netherlands as Pareh, een Rijstlied van Java beginning on 20 November 1936; the film was shown in the Indies. It bankrupted the producers; the film was critically acclaimed in the Netherlands owing to the emphasis of Franken's involvement. Although it was a commercial success amongst the intelligentsia in the Indies, Pareh was a failure with lower-class native audiences. Mochtar never viewed the film in full. Historical reception of Pareh has been positive. Writing in 1955, the Indonesian author and cultural critic Armijn Pane opined that Pareh was technically unparalleled in contemporary Indies

Seaweed (band)

Seaweed is an American band from Tacoma, Washington who were active throughout the 1990s. Their style of music is a combination of punk grunge. In their early days, Seaweed were signed to Washington's Sub Pop, but released albums on Hollywood Records and Merge Records. Seaweed's contemporaries during the time of their existence included Mudhoney, Samiam and tourmates Superchunk and Quicksand, their song "Kid Candy" was featured as a music video in an episode of Butt-head. In 1995, their song "Start With" appeared on Billboard's Alternative Songs chart, peaking at #38; the band toured extensively in the United States with Green Day and Bad Religion, as well as overseas, including shows in Brazil with Garage Fuzz and others in Europe and the Middle East. They were well known for their cover of Fleetwood Mac's "Go Your Own Way", which appeared in the movie Clerks. In 2006, their song "Losing Skin" appeared on the soundtrack for the video game NHL 2K7. On May 15, 2007, the band announced, via MySpace, that they had reformed and were writing a new album, tentatively titled Small Engine Repair.

They announced several live dates. Neither the album nor the tour came to pass, but in 2011 the band did release a 7-inch single on the punk record label No Idea, titled "Service Deck" / "The Weight". Frontman Stauffer works as a nurse in Northern California and has said "It’s hard to play a show because it hurts me physically. I only have one show in me. I can’t do two." Aaron Stauffer – vocals Clint Werner – guitar Wade Neal – guitar John Atkinsbass Jesse Fox – drums Bob Bulgrien – drums Alan Cage – drums Despised Weak Four Spanaway Actions and Indications Seaweed Service Deck The Weight Seaweed 7" "Inside" "Stargirl" "Re-think" "Love Gut" Just A Smirk 7" "Just A Smirk" "Installing" Seaweed/ Superchunk/ Geek" "Patchwork" Deertrap 7" "Deertrap" "Carousel" Bill 7" "Bill" "Pumpkin" Bill 12"/CD "Bill" "Pumpkin" "Squint: The Killerest Expression" Measure 7" "Measure" "Turnout" Measure 12"/CD "Measure" "Turnout" "Taxing" Go Your Own Way CD "Go Your Own Way" "Losing Skin" "Card Tricks" "She Cracked" Go Your Own Way 7"/CD "Go Your Own Way" "Losing Skin" "She Cracked" Kid Candy PROMO CD "Kid Candy" "Sing Through Me" "Shephard's Pie" Free drug zone CD "Baggage" CD only Free drug zone/ "Losing Skin" Green Vinyl 7" "Baggage" CD only Service Deck/The Weight 7" One Out of Four Bill Squint Measure Losing Skin Kid Candy Start With The Estrus Lunch Bucket "Bewitched" Three's A Company "Patchwork" The Estrus Half-Rack "Foggy Eyes" International Pop Underground Convention "Bill" Fortune Cookie Prize "Foggy Eyes" Revolution Come'n' Gone "Baggage" International Hip Swing "Deer Trap" Alternative Route'94 "Losing Skin" Jabberjaw No. 4 "My Letters" Jabberjaw No. 5 Good To The Last Drop "My Letters" John Peel Sub Pop Sessions"Sit in Glass" "She Cracked" Music From The Motion Picture Clerks "Go Your Own Way" West X North-South "Sing Through Me" Oh, Merge "Brand New Order" Live At Emo's "Baggage" Patchwork Compilation "Days Missed Dearly" Nowcore!

The Punk Rock Evolution "Start With" Seaweed at the AMG Seaweed at Sub Pop Seaweed at MySpace

Adam Ballou

Adam Ballou is an American soccer player and cerebral palsy football player. Ballou has cerebral palsy as a result of an intrauterine stroke, he was diagnosed at six months old, he attended James Madison University, graduating in 2015. He started playing soccer when he was 3 years old, played rec and travel, he played on his high school varsity team, was team captain his junior and senior years. Ballou has been a consistent member of the United States Paralympic National Team since being invited to train with them in March 2007 as a 14-years-old, he has competed at the CP Football World Championships in 2009, 2011, 2015. He has represented the United States at the 2012 Summer Paralympics in London, his best performance with the team was a second-place finish at the 2010 Americas Championship. Ballou was born on May 29, 1992 in Virginia Beach and has three sisters. Ballou was diagnosed with cerebral palsy when he was six months old, after he had a pediatric stroke; as a result of the stroke, when he was an infant, doctors told his parents that he might live his life as a vegetable.

The stroke had resulted in him acquiring cerebral palsy and having limited limb functionality on his left side, making it weaker than his right side. To address these physical issues, Ballou had regular physical therapy as a result until he was around a 13-year-old. Ballou attended Norfolk Christian High School in Norfolk, graduating from there in 2011, he went on from there to study International Spanish at James Madison University. He graduated with a minors in business as well as Latin American and Caribbean Studies. While attending university, he took the spring semester of 2012 off so he could train with the US national team ahead of the London Games, he studied abroad, spending a semester in Salamanca, Spain. In 2014, he completed an internship for U. S. State Department at the Embassy in Madrid in 2014 as part of his studies, he has continued to be involved with the university following his graduation. In April 2016, he gave a workshop on Paralympic sport at his alma mater's Godwin Hall in Harrisonburg Ballou speaks Spanish and English.

He is 5 weighs 155 pounds. Ballou started playing soccer when he was a 3-year-old, playing for a team that included his sister and which his father was the coach of, he was able to compete in sports. Many people in his life encouraged him to participate in sports; because of his disability, he trained harder on that side of the body and sometimes feels he performs better on that side as a result. He played varsity soccer for Norfolk Christian High School. In 2012, his soccer coaches were Mike Haas. Ballou is a CP7 footballer and a regular fixture on the US National Paralympic Team, where he plays in the midfield. Ballou started playing CP football in 2007 after getting invited to train with the national team in March. At the time, he was a 14-years-old, he came to the attention of national selectors after the head coach of the Virginia Beach Mariners asked his coach if he knew of any players with cerebral palsy and his coach replied with Ballou's name and contact details. Because of the rules for CP football, he was not able to earn his first national team cap until he was a 16-years-old.

The United States failed to qualify for the 2008 Summer Paralympics. If they had been successful, Ballou would have made the roster, he continued his national team career, was part of the US team that finished 11th at the 2009 World Championships. He continued to get national team calls ups, was with the US team that finished second at the 2010 Americas Championship; the following year, he participated in the 2011 CPISRA World Championships with the national team. An eighth-place finish at this tournament qualified the United States for the London Games. Ballou spent a lot of time preparing for the 2012 Summer Paralympics; when not with the national team, he trained at the Virginia Beach Sportsplex. Having taken a semester off to prepare for the Games, he spent a lot of time in 2012 training with the national team in Chula Vista and was formally chosen by national team head coach Jay Hoffman to be on the London bound national team; the 2012 Games were his first. Ballou was one of seven US Paralympians from Virginia competing in London, his family flew to London to watch him play.

Lots of people came to watch the Games, with 80,000 people showing up to the opening ceremonies and 25,000 people showing up to watch his team play Great Britain. The United States was drawn in Group B with Great Britain and Brazil; the Americans did not win a single game. After the Games when he returned to the USA, he was with the team when they met US President Barack Obama, his participation in London gave him the resolve to try to make the roster for the 2016 Games. In April 2014, Ballou was invited to participate in a week long national team training camp at the Olympic Training Center in Chula Vista, California; the camp was being held in preparation for the 7-a-side Football Ciutat de Barcelona in June of that year. In March 2015, he was part of the 14 man roster that participated in the Povoa de Varzim, Portugal hosted Footie 7 – Povoa 2015 tournament; the competition was a warmup for the World Championships that were held in England in June 2015. Ballou was named to the US side for the 2015 Cerebral Palsy World Championships in England in June 2015.

Ballou came off the bench to substitute in for Michael Moore in the team's 10 - 0 loss to England. He started in the team's 2 - 1 win against Scotland. In the 7th/8th placement match, Argentine goalkeeper Gustavo Nahuelquin

Pinjarra Road

Pinjarra Road is a major west-east road connecting the two major centres of the Peel Region and Pinjarra. A dual carriageway, it forms the termini of both the Kwinana Freeway and Forrest Highway. Old Coast Road south / Mary Street west, Halls Head – to Dawesville, Falcon, Wannanup. Mandurah Road, Mandurah – to Rockingham, Halls Head, Bunbury Lakes Road, Greenfields – to North Dandalup Kwinana Freeway north / Forrest Highway south, Ravenswood – to Stake Hill, Lake Clifton, Bunbury South Yunderup Road, Ravenswood – to South Yunderup South Western Highway, Pinjarra – to North Dandalup, Waroona, Bunbury Australian Roads portal