![]() The three-dimensional version of this map is obtained by rotating this map about the axis that goes through both charges. In other words, electric-field lines cannot cross each other.įigure 18.19(a) shows a two-dimensional map of the electric field generated by a charge of + q and a nearby charge of − q. Because this sum can only be a single number, we know that only a single electric-field line can go through any given point. The electric field due to multiple charges may be found by adding together the electric field from each individual charge. The field lines are denser as you approach the point charge.Įlectric-field maps can be made for several charges or for more complicated charge distributions. The arrows point in the direction that a positive test charge would move. The red point on the left carries a charge of +1 nC, and the blue point on the right carries a charge of –1 nC. In fact, the density of the electric field lines is proportional to the strength of the electric field!įigure 18.18 Electric field lines from two point charges. Looking at Figure 18.17 and Figure 18.18 again, we see that the electric field lines become denser as we approach the charge that generates it. For example, at 2 cm from the charge Q ( r = 2 cm), the electric field is four times stronger than at 4 cm from the charge ( r = 4 cm). The equation E = k | Q | / r 2 E = k | Q | / r 2 says that the electric field gets stronger as we approach the charge that generates it. Thus, the direction of the electric field lines is consistent with what we find by using Coulomb’s law. The opposite is true for negative test charges. If we place the positive charge in the electric field of the negative charge, the positive charge is attracted to the negative charge. This is consistent with Coulomb’s law, which says that like charges repel each other. Thus, a positive test charge placed in the electric field of the positive charge will be repelled. Notice that the electric field lines point away from the positive charge and toward the negative charge. On the left is the electric field created by a positive charge, and on the right is the electric field created by a negative charge. Just drawing the electric field lines in a plane that slices through the charge gives the two-dimensional electric-field maps shown in Figure 18.18. Ask whether students can use this to show that the number of field lines crossing a surface per unit area shows that the electric field strength decreases as the inverse square of the distance. Point out that the number of lines crossing an imaginary sphere surrounding the charge is the same no matter what size sphere you choose. Point out that all electric field lines originate from the charge. Mathematically, saying that electric field is the force per unit charge is written as For example, if we double the charge of the test charge, the force exerted on it doubles. The force exerted is proportional to the charge of the test charge. The electric field exerts a force on the test charge in a given direction. A test charge is a positive electric charge whose charge is so small that it does not significantly disturb the charges that create the electric field. Now consider placing a test charge in the field. The electric field extends into space around the charge distribution. The charge distribution could be a single point charge a distribution of charge over, say, a flat plate or a more complex distribution of charge. If you know the electric field, then you can easily calculate the force (magnitude and direction) applied to any electric charge that you place in the field.Īn electric field is generated by electric charge and tells us the force per unit charge at all locations in space around a charge distribution. Michael Faraday, an English physicist of the nineteenth century, proposed the concept of an electric field. For example, the gravitational field surrounding Earth and all other masses represents the gravitational force that would be experienced if another mass were placed at a given point within the field. The concept of a field is very useful in physics, although it differs somewhat from what you see in movies.Ī field is a way of conceptualizing and mapping the force that surrounds any object and acts on another object at a distance without apparent physical connection. You may have heard of a force field in science fiction movies, where such fields apply forces at particular positions in space to keep a villain trapped or to protect a spaceship from enemy fire. Explain that electric fields are very similar to gravitational fields. Describe how gravity can be thought of as a field that surrounds a mass and with which other masses interact. Ask students whether they have seen movies that use the concept of fields as in force fields.
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![]() So either I need to add something to the sqlite3 program or there is a bug.īTW, I copied the new database file to my android program and find out that my app can handle (read for text to speech) the Unicode data just fine so I apparently don't have an issue anymore. When I Browse the table's data in "DB Browser for SQLite" the same Unicode fields shows as a BLOB. save "C:\\Historical Marker\\Historical Markers.db" import "C:\\Historical Marker\\Input\Markers.csv" Markers I go to the directory "C:\Program Files\DB Browser for SQLite\sqlite-tools-win3500" that has the sqlite3 executable and start it. ![]() My android app changes any of these to a single quote. When browsing the table's data the Unicode characters are shown with the black diamond and a white question mark in it. I get a dialog with the following fields, Table Name filled in with the table name taken from the csv file, Column names in first line - checked, Field separator - comma, Quote character - double quotes, Encoding - UTF-8, and Trim fields - checked. Then I select the csv file that contains the Unicode characters from my PC file system. After starting "DB Browser for SQLite" on my PC I select "File > Import > Table from CSV file.". I have a csv file that has Unicode data in it. Larry, I am sorry that my explanation of my issue was not clear enough for you. ![]() If this amped-up snake isn’t scary enough, there’s also a reference to that urban myth about Candiru, the tiny fish that are said to swim up the urethra and lodge themselves with their painful spines. This snake is so very dangerous because it defies the rules of nature (and gravity). The plot is wonderfully ridiculous, surrendering any pretence at accuracy. Try not to laugh when he described how “They strike, wrap around you, hold you tighter than your true love, and you get the privilege of hearing your bones break before the power of embrace causes your veins to explode.” “Buenos noches, beautiful,” he marvels when it appears. (You know: Man is the real monster, etc.) We’re supposed to believe it’s for the money, but really Serone is seemingly in love with this snake. Serone scams his way onto the boat and proceeds to use everyone as bait in his quest to capture the anaconda. He is excessively creepy and so transparently untrustworthy that it would not have been surprising had he turned to camera and gone “Muahahaha!” But his agonizing attempt at an accent, unnatural pacing, and exaggerated sneering is absolutely torturous-seriously, he makes falling prey to that snake seems desirable. He is a warped throwback to an old-timey villain, the type that ties damsels to train tracks. His take on Serone, a villainous ex-priest turned snake hunter, is something else. I am 100 percent here for the ridiculously snooty English host Westridge (Jonathan Hyde) who brings champagne, uses the deck like a golf range, and says things like “I'm not your bloody poodle!” It is obvious that devious skipper Mateo (Vincent Castellanos), hippie sound-guy Gary (Owen Wilson), and fun producer Denise (Kari Wuhrer) are going to go first. Ice Cube is the down-to-earth cameraman who gets shit done. The anthropologist (Stoltz) is her lover and the film’s financier (snooze). ![]() Lopez is the tough, sexy director (who surprisingly never takes her clothes off, which left much of the audience disappointed-T&A is absolutely expected in this type of movie). They are so straightforward that you really have no stake in their survival, but not caring means that it is much easier to watch their number dwindle. The eight characters are a collection of types that are standard and so completely predictable that no character development is needed (or offered). Plus, who wouldn’t want to see Ice Cube fight a snake? I’m assuming that the eclectic group of recognizable actors was what encouraged viewers: Oscar-winner Jon Voight lent some prestige, Eric Stoltz was familiar from his many film and television roles, and in the previous two months Jennifer Lopez had played Jack Nicholson’s mistress in Blood and Wine and the title role in the biopic Selena. The fun of Anaconda is all in the casting. It is not a total surprise that Anaconda ranks 23rd, but it is still pretty impressive for a film about a killer snake. Action films were also hugely successful-the top ten included Air Force One, Tomorrow Never Dies, and The Fifth Element. Similar releases included Dante’s Peak, Volcano, and Event Horizon. The top three earners were Titanic, Men in Black, and The Lost World: Jurassic Park. In 1997, disaster films dominated the US box office. But if you stop wondering if you’re supposed to be laughing, it really is an enjoyable, ridiculous adventure. ![]() The creature feature has a nonsensical plot, over-the-top acting, and special effects that haven’t held up. But Anaconda is less Jaws, and more Jaws 3. (If this is what you are looking for, watch the amazing Joe Dante/Roger Corman 1978 film Piranha). There were predictable howls about this being yet another Spielberg rip-off. ![]() Today’s game footage trailer is merely just a glimpse at what’s in store in terms of the new abilities our heroes will acquire, suits they will wear (more on that some other time), and the villains that will try to hunt them down. Much of the development team that brought you Marvel’s Spider-Man is returning to produce Marvel’s Spider-Man 2, including Bryan Intihar (creative director) and Ryan Smith (game director). Just as in our previous Spider-Man games, we not only want to tell a great Super Hero story, but also deliver a compelling human story, one full of heart and humor that dives deep into the people behind the mask. While pushing the capabilities of the console will be very exciting, we’re equally pumped to craft all-new stories for Peter and Miles in this sequel. We’re so thrilled to continue the journey of both Peter Parker and Miles Morales in their most epic single-player adventure yet, coming exclusively to PlayStation 5 consoles in 2023. Let’s start with the one most of you probably could’ve guessed: Marvel’s Spider-Man 2. And what’s so exciting is that our collaboration isn’t ending anytime soon, as today we revealed not one-but TWO-new Marvel titles coming from Insomniac Games: Marvel’s Spider-Man 2 and Marvel’s Wolverine. ![]() Learning from and sharing with these true believers as we created games such as Marvel’s Spider-Man and Marvel’s Spider-Man: Miles Morales has been a career highlight for many of us. That approach even applies when we work with those outside our studio, as it’s been such a pleasure to collaborate with Marvel Games. ![]() The rate of this machine, therefore the tool might be stopped. Therefore, it normally takes quite a while to finish the scan, based on the magnitude of this scan place. Wondershare Recoverit Keygen gets identical capabilities. 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The atomic radius of a chemical element is a measure of the distance out to which the electron cloud extends from the nucleus. It must be noted, atoms lack a well-defined outer boundary. The atomic radius of Niobium atom is 164pm (covalent radius). Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. The atomic mass is carried by the atomic nucleus, which occupies only about 10 -12 of the total volume of the atom or less, but it contains all the positive charge and at least 99.95% of the total mass of the atom. Is niobium a metal Niobium is a metal element that belongs to the group of. Since the number of electrons is responsible for the chemical behavior of atoms, the atomic number identifies the various chemical elements. Niobium, the Nb element, is found on the periodic table with an atomic number of 41. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. Mass numbers of typical isotopes of Niobium are 93. Isotopes are nuclides that have the same atomic number and are therefore the same element, but differ in the number of neutrons. It belongs to the transition metals, in the periodic table it is in the 5. Atomic Mass 92,90638 Learn more about the atomic mass. Description Shiny white, soft, ductile metal. Atomic Number 41 Learn more about the atomic number. It can be used in nuclear reactors and is known to be superconductive when alloyed with tin, aluminum or zirconium. The difference between the neutron number and the atomic number is known as the neutron excess: D = N – Z = A – 2Z.įor stable elements, there is usually a variety of stable isotopes. Niobium is a chemical element with the element symbol Nb and the atomic number 41. Atomic Symbol Nb Uses Used as an alloy with iron and nickel. Neutron number plus atomic number equals atomic mass number: N+Z=A. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1,602 x 10 -19 coulombs. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. Niobium: Metal: Symbol: Nb Atomic number: 41 Atomic mass: 92.90638 Group: Transition Metal CAS-number: Physical data Isotopes Other info: Navigation: V: Zr: Mo: Ta. Find physical data, electron configuration, chemical properties, aggregation states, isotope data. Niobium is a chemical element with atomic number 41 which means there are 41 protons in its nucleus. Get the facts about element Niobium (Nb) 41 from the periodic table. Up to date, curated data provided by Mathematica's ElementData function from Wolfram Research, Inc.Atomic Number – Protons, Electrons and Neutrons in Niobium It is often found in the pyrochlore mineral. It is one of the most common elements found in the Earth’s Crust. It is a soft, ductile transition metal which is resistant to corrosion due to the presence of an oxide layer on its surface. Niobium, formerly columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41. Specific Heat: Value given for solid phase. Niobium is a chemical element with atomic number 41 and is represented with the symbol Nb in the Periodic Table. XRF Spectrum of Zirconium with K lines Niobium (atomic number Z41) Piercing made of Niobium. ![]() Technical data for the element Niobium in the Periodic Table H ![]()
© 2016 The Author(s) (Published by SAGE Publications). Wee Kim Wee School of Communication and Information Investigating the discourse generated by this critical incident is important because it identifies where journalists and readers draw the boundaries of legitimate journalism, specifies the place of ethics in boundary discourse, and informs journalistic practice about the phenomenon of outing in the news. Guided by the frameworks of boundary work and field theory, this study analyzed 65 news articles and 2203 online comments and found that journalists and audiences problematized Gawker’s identity as a journalistic organization and evaluated the article based on traditional standards of newsworthiness, audiences asserted their role in journalism’s larger interpretive community, and that the larger interpretive community assessed the article based on the ethics of outing. The facts pretty much speak for themselves, though: While theres been a 24 percent drop. The popular blog eventually removed the article following condemnation from readers and other journalists. Condé Nast is 'having the worst year of any publisher,' or so a 'rival executive' tells Keith Kelly today. Great media baron families like his are a dying breed. Gawker ignited a controversy when it published an article about a married Conde Nast executive who allegedly sought the services of a gay escort. With the steady crumbling of Conde Nast, you have to wonder how long their chairman, Si Newhouse, can hang tough. Out of bounds? How Gawker’s outing a married man fits into the boundaries of journalism. ![]() Out of bounds? How Gawker’s outing a married man fits into the boundaries of journalism They can grow in full sun to partial shade, making them a versatile choice for different areas of your landscape. Wax myrtles are more adaptable when it comes to light conditions. ![]() They need at least six hours of direct sunlight per day for optimal growth and flower production. Light PreferencesĬrepe myrtles thrive in full sun. Understanding these requirements can help you choose the tree that is best suited to your garden’s conditions. While both crepe myrtle and wax myrtle are relatively easy to grow, they do have specific growing requirements that need to be met to ensure their health and vitality. While not as dramatic as some other deciduous trees, the crepe myrtle’s fall display still adds a nice display of color to your yard.Īs an evergreen, wax myrtle does not offer fall color, but its leaves remain vibrant throughout the year, providing consistent greenery in your landscape.Ĭrepe Myrtle vs. Some varieties of crepe myrtle offer attractive autumn colors with leaves turning to beautiful shades of yellow, orange, or red. Wax myrtles have a moderate to fast growth rate and can quickly form dense hedges or screens when planted in groups. ![]() As long as their basic requirements are met, they’ll establish themselves in a relatively short period. Growth Rate & HabitsĬrepe myrtles are fast-growing trees. Wax myrtle has a grayish-brown bark that is relatively smooth and does not peel. The peeling of bark creates a mottled pattern of grays, browns, and creams on the trunk, which many people find very appealing. As the tree grows, the outer layer of the bark peels away to reveal a smooth lighter-colored surface. The crepe myrtle is known for its attractive, exfoliating bark. These berries add a touch of color to the landscape and are a food source for birds. Wax myrtles do not produce noticeable flowers, but they do produce small, waxy, blue-gray berries in the fall and winter. The trees continue blooming for several months, providing a long-lasting and welcome pop of color to your yard. Flowers & Ornamental AppealĬrepe myrtles are celebrated for their stunning summer blooms in white, pink, red, or lavender, depending on the variety. They are narrow and aromatic, releasing a pleasant fragrance when crushed. Wax myrtle leaves are evergreen, remaining vibrant throughout the year. In autumn, these leaves slowly change to shades of yellow, orange, or red, depending on the variety, adding a splash of nice color to your garden. LeavesĬrepe myrtle leaves are oval in shape and dark green in color, providing a nice contrast to the brightly colored flowers. They typically reach heights of 10-20 feet and have a dense, bushy form that makes them excellent for hedges or privacy screens. ![]() Wax myrtles, on the other hand, are smaller and can be grown as large shrubs or small trees. They develop a rounded, vase-like shape over time and have multiple trunks, which create a full appearance and provide visual interest. Tree Size and ShapeĬrepe myrtles are larger trees, typically reaching heights of 10-30 feet. Let’s take a look at their individual characteristics. ![]() Regular watering, prefers well-drained soilĭeciduous, some varieties offer fall colorĬrepe myrtle and wax myrtle have distinctive features that make them unique. I present the most popular choices in my article, Best Crepe Myrtle Varieties. If you thought there was just one type of crepe myrtle, think again. In the following sections, we’ll compare these two plants and explore their features in more detail. To fully appreciate the differences between crepe myrtle and wax myrtle, it’s important to explore their features, growing requirements, and care needs. Crepe myrtles prefer full sun and well-drained soil while wax myrtles can tolerate a wider range of conditions. What’s the difference between a crepe myrtle and a wax myrtle? Crepe myrtles are known for vibrant summer blooms and attractive, exfoliating bark while wax myrtles are evergreen shrubs or small trees with aromatic foliage and waxy, blue-gray berries. Among the many options available, crepe myrtle and wax myrtle are two popular choices.īoth offer unique aesthetics and characteristics, but they also have distinct differences. Choosing the right tree for your landscape can significantly enhance its beauty and functionality. |
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