However, the first arrangement of atoms is preferred because it has the lowest number of atoms with nonzero formal charges (Guideline 2). Note that the sum of the formal charges in each case is equal to the charge of the ion (–1). Possible Lewis structures and the formal charges for each of the three possible structures for the thiocyanate ion are shown here: The formal charges present in each of these molecular structures can help us pick the most likely arrangement of atoms. We can draw three possibilities for the structure: carbon in the center and double bonds, carbon in the center with a single and triple bond, and oxygen in the center with double bonds:Ĭomparing the three formal charges, we can definitively identify the structure on the left as preferable because it has only formal charges of zero (Guideline 1).Īs another example, the thiocyanate ion, an ion formed from a carbon atom, a nitrogen atom, and a sulfur atom, could have three different molecular structures: NCS –, CNS –, or CSN –. We know from our previous discussion that the less electronegative atom typically occupies the central position, but formal charges allow us to understand why this occurs. To see how these guidelines apply, let us consider some possible structures for carbon dioxide, CO 2. When we must choose among several Lewis structures with similar distributions of formal charges, the structure with the negative formal charges on the more electronegative atoms is preferable.Lewis structures are preferable when adjacent formal charges are zero or of the opposite sign.If the Lewis structure must have nonzero formal charges, the arrangement with the smallest nonzero formal charges is preferable.A molecular structure in which all formal charges are zero is preferable to one in which some formal charges are not zero.A few guidelines involving formal charge can be helpful in deciding which of the possible structures is most likely for a particular molecule or ion: In many cases, following the steps for writing Lewis structures may lead to more than one possible molecular structure-different multiple bond and lone-pair electron placements or different arrangements of atoms, for instance. The arrangement of atoms in a molecule or ion is called its molecular structure. N: 0 all three Cl atoms: 0 Using Formal Charge to Predict Molecular Structure Thus, we calculate formal charge as follows: Another way of saying this is that formal charge results when we take the number of valence electrons of a neutral atom, subtract the nonbonding electrons, and then subtract the number of bonds connected to that atom in the Lewis structure. The formal charge of an atom in a molecule is the hypothetical charge the atom would have if we could redistribute the electrons in the bonds evenly between the atoms. We can use the concept of formal charges to help us predict the most appropriate Lewis structure when more than one is reasonable. As we have seen, however, in some cases, there is seemingly more than one valid structure for a molecule. In the previous section, we discussed how to write Lewis structures for molecules and polyatomic ions. Explain the concept of resonance and draw Lewis structures representing resonance forms for a given molecule.Use formal charges to identify the most reasonable Lewis structure for a given molecule.Compute formal charges for atoms in any Lewis structure. By the end of this section, you will be able to:
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Export a video optimized for YouTube, Facebook, and other popular video destinations.Email videos with Mail Drop when signed in to iCloud.Send your project to Final Cut Pro and take advantage of advanced editing tools, professional effects, third-party plug-ins, and more.Choose from 48 fun video and audio effects.Automatically zoom in on faces and glide across panorama photos with the Ken Burns Effect.Stabilize shaky video for a smoother picture that's easier to watch.Give your video a boost with easy-to-use color controls.Instantly improve the look and sound of your video using one-click Enhance.Create a soundtrack using built-in music and sound effects, songs from your iTunes library, songs you've recorded in GarageBand, and your own narration.Create sophisticated picture-in-picture, side-by-side, and green screen effects.Speed up and slow down the action with fast-forward and slow-motion effects. 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Browse your video library, share favorite moments, and create beautiful movies that you can edit at resolutions up to 4K. Organize your videos just like your photos, and precisely edit with easeWork on multiple iMovie projects at once and drag & drop clips among themIntegrate with other iLife programs to use songs, photos, and an original sound trackOutput your creation to a blog, its own web page, or as a video podcast with iWebUnderstand basic film techniques to improve the quality of the video you bring to iMovieįrom choosing and using a digital camcorder to burning the finished work onto DVDs, posting it online, or creating versions for iPod and iPhone, iMovie '09 & iDVD: The Missing Manual helps you zoom right in on the details.With a streamlined design and intuitive editing features, iMovie lets you create Hollywood-style trailers and beautiful movies like never before. Author and New York Times tech columnist David Pogue uses an objective lens to scrutinize every step of process, including how to: You get crystal-clear, jargon-free explanations of iMovie's new video effects, slow & fast motion, advanced drag & drop, video stabilization, and more. iMovie '09 and iDVD: The Missing Manual gets you up to speed on everything you need to turn raw digital footage into highly creative video projects. But the box doesn't include a good user's guide, so learning these applications is another matter. Bursting with new features, Apple's iMovie '09 is vastly more usable and complete than iMovie '08 - amazing right out of the box. Interiors of the kitchen can single-handedly change the outlook of the space and make it seem more gracious and welcoming. Tiles on the kitchen wall come in extremely handy as you can wipe them down instead of the extra hassle of scrubbing or repainting the walls. Indeed, such incidents can splatter the condiments on the wall and leave a big mess to clean up later. But it is also where you probably dropped a bowl of curry or forgot to keep the lid on while operating the mixer-grinder. No matter where you end up, nothing beats the original kitchen’s aura and aroma. The family members often hang out over a cup of coffee after a tiring day at work or where the kids learn to bake cookies for the first time. The users should exercise due caution and/or seek independent advice before they make any decision or take any action on the basis of such information or other contents.The kitchen, the heart of your home, bears comfort in multiple forms. shall not be liable in any manner (whether in law, contract, tort, by negligence, products liability or otherwise) for any losses, injury or damage (whether direct or indirect, special, incidental or consequential) suffered by such person as a result of anyone applying the information (or any other contents) in these articles or making any investment decision on the basis of such information (or any such contents), or otherwise. No warranties, guarantees, promises and/or representations of any kind, express or implied, are given as to (a) the nature, standard, quality, reliability, accuracy or otherwise of the information and views provided in (and other contents of) the articles or (b) the suitability, applicability or otherwise of such information, views, or other contents for any person’s circumstances. Nothing contained in the articles should be construed as business, legal, tax, accounting, investment or other advice or as an advertisement or promotion of any project or developer or locality. All views and/or recommendations are those of the concerned author personally and made purely for information purposes. These articles, the information therein and their other contents are for information purposes only. Opting for good backsplash kitchen tiles or dado tiles changes the entire look of a kitchen and are good for practical reasons. The kitchen, being an integral part of your house, where you spend a lot of time cooking food, should be given proper attention. Gone are the days when dado tiles or backsplash kitchen tiles were only meant to protect walls from the spills caused during cooking. What are dado tiles or backsplash kitchen tiles?ĭado tiles or backsplash kitchen tiles fill the gap between the countertop and modular cabinets in the kitchen. How would you maintain backsplash kitchen tiles?.Can we use wall tiles as floor tiles while constructing the floor in our house?.Things to remember while choosing backsplash kitchen tiles.Aqua-coloured tiles for the kitchen wall.Dado tiles: Embossed tiles design for kitchen.Modern kitchen tiles design with honeycomb patterns.Dado tiles: Glass backsplash kitchen tiles.Dado tiles: Marble backsplash kitchen tiles.Pastels and patterns in kitchen wall tiles.Dado tiles: Custom made tiles design for your kitchen.What are dado tiles or backsplash kitchen tiles?. We also spotted one fine ass: Jack, the donkey who roams the fields at one of our favorite roadside stops. Along the way, Robert and I traversed myriad freeways and backroads. The destination: Maryland orchards to score some fruit and veggies. My test car, the base-model BMW X7 xDrive40i, boasted a strong six-cylinder engine and velvety transmission. IN A NUTSHELL: Sassy on the outside, but comfy-almost overly so-inside. PROS: Zippy, fresh facelift, flashy cabinĬONS: Tight third row, clunky HVAC controls, costly options These three fuel-friendly rides help explain why. While overall car sales were down last year, sales of EVs and plug-in hybrids were up. Nifty amenities include massaging seats, hands-free liftgate, automated parking system and limited hands-free driving. The dash flaunts two large display monitors: 12.3-inch digital gauge cluster and 13.2-inch infotainment touchscreen (note that a few navigation features were less-than-intuitive at first). Two new interior colors say it all: Smoked Truffle and Eternal Red. The Corsair also has a swanky cabin with primo materials. Handling is comparable to a Lexus sedan versus a BMW speedster, though the Corsair is notably faster than an Escape. Built on the same platform as the less expensive Ford Escape, the Corsair is the better choice for drivers itching for a refined ride. IN A NUTSHELL: As with various other hybrid crossovers, the Lincoln Corsair plug-in is only available in one high-end trim level. PROS: Glitzy outside, cushy inside, creature comforts galore.ĬONS: Pricey, some touchscreen anomalies, battery-only range not so far. LINCOLN CORSAIR PLUG-IN HYBRIDĠ to 60 mph: 7.0 seconds Lincoln Corsair plug-in hybrid There are so many safety systems that even Volvo-renowned for its safety innovations-would likely be impressed. The seating features alone are impressive: heated/ventilated front seats, heated second-row seats, 14-way power-adjustable driver’s seat, 10-way front passenger seat, second-row captain chairs, and 50/50-split folding third-row seat. What’s more, there’s plenty of bang for the buck: remote keyless entry, hands-free power liftgate, LED interior lighting, second-row sunshades, 12-speaker premium Bose stereo and other goodies. In fact, not once did I swear like a New York City cab driver under my breath. It felt especially steady as I was weaving through stop-and-go Beltway congestion after some unexpectedly long days at work. A tad slower and less sporty than various competitors, this Kia is still one smooth ride. IN A NUTSHELL: Need a larger hauler? The Kia Sorento plug-in hybrid is the most affordable midsize crossovers with third-row seating. PROS: Fuel efficient, easy to drive, third-row seating.ĬONS: Not so sporty, low towing capacity, third row for kids only. KIA SORENTO PLUG-IN HYBRIDĠ to 60 mph: 7.9 seconds Kia Sorento plug-in hybrid Overall, the Escape may not be as fully upscale as a Lincoln Corsair, but it’s pretty close. My test vehicle also came with many sweet options: head-up display, 360-degree split-screen camera, panoramic roof and active park assist. There’s only one trim level, but it’s loaded: heated seats, heated steering wheel, dual-zone climate control, tinted rear windows, nav system and more. Other nice surprises: a hushed cabin and crystal-clear stereo. Ford says this Escape can go 37 miles on battery power alone, but for me it was even better-up to 40 miles. And there’s plenty of zip when driving in all-electric mode. Handling is highly responsive, as are the brakes. Exterior styling on an Escape is snazzy, with tasteful LED accent lighting stretching across the top of the grille. IN A NUTSHELL: The Ford Escape plug-in hybrid is $13,000 less than its luxe sibling, the Lincoln Corsair. PROS: Refreshed design, good fuel economy, roomy.ĬONS: Some cheap interior plastics, no ventilated seats, no all-wheel drive. Little late, but like to add a slightly more elegant version here. A permutation also called an arrangement number or order, is a rearrangement of the elements of an ordered list S into a one-to-one correspondence with S itself. I've already figured out how to do this in python I really need the solution to be in JavaScript. Note: I'm looking to make the function return arrays of integers, not an array of strings. I could not figure out how to modify it to make it work with an array of integers, (I think this has something to do with how some of the methods work differently on strings than they do on integers, but I'm not sure.) let permArr = The function below (I found it online) does this by taking a string as an argument, and returning all the permutations of that string creates an array of all the possible permutations of, with each permutation having a length of 4.takes an array of integers as an argument (e.g. Note: O (1) space in relation to both the string length AND the size of the alphabet. In other words, one of the first strings permutations. Given two strings how can you check if they are a permutation of each other using O (1) space Modifying the strings is not allowed in any way. This lecture involves two example explanations. The task is to find all permutations (need not be different) of a given string. Given two strings s1 and s2, write a function to return true if s2 contains the permutation of s1. As a list element, you can use Map, where key - the position of the.First prepare a list of possible combinations of characters for each character-position, and then consecutively reduce the stream of these lists to a single list, by summing the pairs of list elements. I'm trying to write a function that does the following: 5.1K 263K views 3 years ago Programming Interview Questions This lecture explains how to find and print all the permutations of a given string. As a kind of recursion, you can use Stream.reduce method. We can call an isosceles triangle with a 90-degree angle a right isosceles triangle. Apart from catering students preparing for JEE Mains and NEET, PW also provides study material for each state board like Uttar Pradesh, Bihar, and others. Yes an isosceles triangle can have a 90-degree angle. Physics Wallah strives to develop a comprehensive pedagogical structure for students, where they get a state-of-the-art learning experience with study material and resources. With our affordable courses like Lakshya, Udaan and Arjuna and many others, we have been able to provide a platform for lakhs of aspirants.įrom providing Chemistry, Maths, Physics formula to giving e-books of eminent authors like RD Sharma, RS Aggarwal and Lakhmir Singh, PW focuses on every single student's need for preparation. First, we will compute Perimeter of the isosceles triangle using formula, P 2× a + b. Physics Wallah's main focus is to make the learning experience as economical as possible for all students. Two equal (congruent) sides in ABC, AB and AC are two congruent sides. We believe in empowering every single student who couldn’t dream of a good career in engineering and medical field earlier. PW strives to make the learning experience comprehensive and accessible for students of all sections of society. Then, subtract this value from 180 degrees to get the measurement of the vertex angle. We successfully provide students with intensive courses by India's top faculties and personal mentors. How do you find the vertex angle of a triangle If given the value of the base angle of an isosceles triangle, the vertex angle can be easily calculated. Physics Wallah also caters to over 3.5 million registered students and over 78 lakh+ Youtube subscribers with 4.8 rating on its app. We also provide extensive NCERT solutions, sample papers, NEET, JEE Mains, BITSAT previous year papers, which makes us a one-stop solution for all resources. Physics Wallah is India's top online ed-tech platform that provides affordable and comprehensive learning experience to students of classes 6 to 12 and those preparing for JEE and NEET exams. Press the Home button to return to normal mode. Long-press on iReal Pro (it should not open) and all user apps will start to jiggle There's still a lot of helpful information in this thread.Ĭreates an email with all songs and playlists, send to yourself (back to your iOS device so you can reinstall it all) When you have more experience with iReal Pro, you may like to upload any songs you have prepared which are missing from the forum, answer questions, post your thoughts or solutions. Use an Airturn device to turn pages, start, stop playback - foot pedals, hand-held devices (only for iOS5 and above) Information on iReal Pro for Android, Mac, iOS Support, Help. We delete posts there regularly so it is not for your official uploads to the other members nor for storing your backups. Use our temporary Sandbox forum area to practice uploading songs to the forum or for transferring between your devices. With a cloud app installed on your device, you will have the option to save backups (or individual songs or playlists) to the cloud.īackup before updating (see Backup above).Ĭopyright, rules for posting songs at forum: Settings>Backup and reset>Backup my data, if set to ON, it should back up all your applications' data (although Google does not guarantee this will work for every device.) This is mainly used when restoring or for your new device. More>Backup (do this regularly.) A window will open with choices as to where you want to save the backup Beginners, run a few tests to make sure your backup procedure works (make some quick songs, backup, delete, restore from backup.) Use our custom-coded Advanced Search (Magnifying-glass icon, top right from any forum page) to locate songs or keyword search.Īlways backup regularly and before updating. In OSX look under: Help/Tutorials and Help/Help & Support.Īlso read the Guides and Articles: (started in 2015, very useful!) Just touch the "?" In the circle at the top of any chart. There is a detailed tutorial inside the app in More./Tutorials and /Help &Support The download will open iReal Pro and import. attachment shows where to tap/click to activate download connect to forums within iReal Pro (your device must be connected to internet) To import from forums, open iReal pro on your device, then: You do NOT need to register in order to download songs or playlists. Choose from 47 different accompaniment styles (Swing, Ballad, Gypsy Jazz, Bluegrass, Country, Rock, Funk, Reggae, Bossa Nova, Latin.(this is an old thread but this post has been updated for iReal Pro)Ĭannot log in or registration problems or lost password:. Have a virtual band accompany you as you practice Practice with a realistic sounding piano (or guitar), bass and drum accompaniments for any downloaded or user-created chord chart. Now every aspiring musician has a backup band in their pocket.” – Tim Westergren, Pandora FounderĬreate, edit, print, share and collect chord charts of your favorite songs for reference while practicing or performing. “It’s the perfect technology for a practicing musician: high-quality digital audio, mixable, transposable into any key and completely mobile. ~One of Time Magazine's 50 Best Inventions of 2010~ The app also lets you create and collect chord charts of your favorite songs for reference. It simulates a real-sounding band that can accompany you as you practice. I believe Standard’s 112 is a derivative of Charles’ cone 6 clay, and it fires beautifully.” came to visit the studio and told Charles he could make the same clay cheaper and better,” she recalls. Wiest tells the story of how she came to know Standard Ceramic. Counts, a Kentucky native, was an advocate for the preservation of traditional Appalachian crafts and a noted potter who mixed his own clay bodies. Inspired by these concepts, she went on to work with Charles Counts, at Rising Fawn Pottery in Georgia. “It was so wonderful to be in a place where it was a way of life, where the object is produced by a community of people dedicated to the work.” “The clay was mined in the countryside and brought to the potters in Kyoto, who worked in the master studios,” she says. don’t know their own history.’ I have tried to learn more about our country and the world through learning more about pottery.” Wiest was intrigued by the organic process of the manufacture of pottery in Kyoto, based on the Japanese Mingei, or “folkcraft” movement. Something he said has been with me ever since. “While there,” she says, “I had the good fortune to meet the famous English potter Bernard Leach and to have time with him. She points out that the UPS truck will go anywhere, but, “if you want something, you have to plan ahead!”Īs a young woman in the 1960s, fresh from college, she travelled to Kyoto, Japan to further her studies in clay. The availability of goods is not immediate. “Nature,” she says, “is often a challenging and difficult part of your day.” Time is not measured by the bustle of urban activity. The primarily rural lifestyle of the region presents obstacles to everyday life. “We are resourceful and resilient and we find ways to get things done with what we have on hand.” She cites the abundance of natural resources – timber, coal, clay – that becomes the raw material of an existence rooted in the earth. “We are a complex people,” Wiest says of her Appalachian neighbors. From her early training at Agnes Scott College, through studies in Japan and residency in Georgia, Wiest lives a quest for beauty that manifests in a lifetime of making and defining Appalachian art and culture. What is the value of a life in the arts? West Virginia potter Scottie Roberts Wiest has fifty years of experience selling and making functional pottery and plenty to say about a lifestyle embedded in nature and community in her native Appalachia. The flute facilitates the removal of the concrete dust as the hole is being drilled. The third area is the flute or the trough section of the spiral.The next component of the SDS bit is the land - which is the raised portion of the spiral (similar to the crest or peak of a wave).This set of grooves also allows the bit to slide in the chuck, enhancing the drilling torque and hammering energy of the tool. The larger of the grooves are two grooves that extend to the end of the shank and when chucked in the drill, guide the SDS bit to a positive rotation. The smaller of the grooves are two slots that are not open at the end and prevent the bit from falling out. First, there is the shank, which has two sets of grooves (for a total of four grooves) that fit into the hammer drill collar.These carbide tipped masonry drill bits are more durable due to the hardness of the heads- making them tougher and more resistant to extreme loads. But unlike ordinary bits, the SDS drill bit provides a longer service life. The SDS carbide tipped drill bit is a masonry bit designed for concrete drilling. As the bit evolved, it has come to be known as a Slotted Drive System or Slotted Drive Shaft. The original German interpretation was "Steck-Dreh-Sitz" meaning Insert-Twist-Stay. There is some debate as to what the "SDS" acronym stands for. SDS is simply the bit retention system - or how the bit is held in the drill. One popular type of drill bit that is used to drill into cured concrete is the SDS carbide tipped drill bit. Whenever a post-installed concrete anchor is being used to attach a fixture to cured concrete, a hole must be drilled in the concrete. Purchase SDS Bits What is a carbide tipped drill bit? A work by Michael Scot speaks of gold as an elixir of life. According to legend, certain alchemists have gained a reputation as creators of the elixir. In European alchemical tradition, the elixir of life is closely related to the creation of the philosopher's stone. Main article: Philosopher's stone Dell' elixir vitae, 1624 The Indian elixirs were mineral remedies for specific diseases or, at the most, to promote long life. But the elixir of immortality was of little importance in India (which had other avenues to immortality). It is also possible that the alchemy of medicine and immortality came to China from India, or vice versa in any case, for both cultures, gold-making appears to have been a minor concern, and medicine the major concern. Evidence of the idea of transmuting base metals to gold appears in 2nd to 5th century AD Buddhist texts, about the same time as in the West. Mercury, which was so vital to alchemy everywhere, is first mentioned in the 4th to 3rd century BC Arthashastra, about the same time it is encountered in China and in the West. In the Puranas, that due to the defeat of the devas at the hands of the asuras, both power-seeking races, the preserver deity Vishnu asked the devas to churn the ocean of milk, so that they may retrieve amrita to empower themselves. India Īmrita, the elixir of life, has been described in Hindu scriptures. The Jiajing Emperor in the Ming dynasty died from ingesting a lethal dosage of mercury in the supposed "Elixir of Life" conjured by alchemists. Many of these substances, far from contributing to longevity, were actively toxic and resulted in Chinese alchemical elixir poisoning. 682 AD), a famous medical specialist respectfully called "King of Medicine" by later generations, discusses in detail the creation of elixirs for immortality (including several toxic ingredients such as mercury, sulphur, and arsenates), as well as those for curing certain diseases and the fabrication of precious stones. The most famous Chinese alchemical book, Danjing yaojue ("Essential Formulas of Alchemical Classics") attributed to Sun Simiao (c. Gold was considered particularly potent, as it was a non-tarnishing precious metal the idea of potable or drinkable gold is found in China by the end of the third century BC. The ancient Chinese believed that ingesting long-lasting mineral substances such as jade, cinnabar, or hematite would confer some of that longevity on the person who consumed them. He embarked on a second voyage with 3000 young girls and boys, but none of them ever returned (legend has it that he found Japan instead). During the Qin dynasty, Qin Shi Huang sent Taoist alchemist Xu Fu to the eastern seas with 500 young men and 500 young women to find the elixir in the legendary Penglai Mountain, but returned without finding it. Many rulers of ancient China sought the fabled elixir to achieve eternal life. Unfortunately, it is eaten by a serpent before he can do so.Ĭhina Xu Fu's first expedition to the Mount of the immortals. Gilgamesh is directed by him to find a plant at the bottom of the sea which he does but seeks first to test it on an old man before trying it himself. He seeks out Utnapishtim, a Noah-like figure in Mesopotamian mythology in which he was a servant of the great Alchemist of the rain who later became immortal, to seek out the advice of the King of Herod of the Land of Fire. History Ancient Mesopotamia Īn early mention of an elixir of life is found in the Epic of Gilgamesh (from the 2nd millennium BC) in which Gilgamesh comes to fear his own declining years following the death of his beloved companion Enkidu. Alchemists in various ages and cultures sought the means of formulating the elixir. This elixir was also said to cure all diseases. The elixir of life, also known as elixir of immortality, is a potion that supposedly grants the drinker eternal life and/or eternal youth. Alchemical potion that grants immunity, eternal youth and immortality to its drinker The mythological White Hare from Chinese mythology, making the elixir of life on the Moon |
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