Uncertainty Calculator vs Tactile Images READER

Uncertainty Calculator evaluates the error propagation throughout the mathematical expressions comprised of variables of uncertain value. The application allows input of up to three value-error pairs (A, B and C), that can be used as a parameters in the final expression. Error values should be provided in absolute (100 +/- 5) or in relative format, the latter should appear in percent format (100 +/- 5%). The evaluated expression can include numerous functions, that provided by row of the appropriate buttons. Components and functions can be added directly to the expression field by pressing the corresponding buttons. To encompass expression into the preset formula, select the expression and press the corresponding formula button. Particular attention should be paid to placing brackets to avoid equation ambiguity. The application deals with independent, random errors. So if this is a case never use A + A, but rather 2*A and never A*A*A but rather A^3! Obviously, different parameters can be combined in any way (A+B or C *A^2 .. is perfectly fine). Angles for trigonometric functions can be provided in degrees or radians, and that should be reflected by setting a yellow button to "DEG" or "RAD". Bear in mind the importance of units in any of calculations! Implementation Examples: 1.The charge passing through an electrical circuit is defined by: Q = I * t, where I is the current and t is the time. Calculate the total charge value when a current of 0.15 ± 0.01 A passes through the circuit for 120 ± 1 s: Input: A = 0.15 ± 0.01, B = 120 ± 1 The final expression will be A*B, and press Calculate: The final value will be: 18 ± 1.2 Thus, it can be reported the total charge as 18 C ± 1 C. Important! One should only report as many significant figures as are consistent with estimated error! So the value should be rounded to the rightmost decimal place at which error applies. 2. A ball is tossed straight up into the air with initial speed vo = (4.0± 0.2) m/s. After a time t = (0.60 ± 10%) s, the height of the ball is h = vo*t - 0.5gt^2 = 0.636 m (g = 9.80 m/s^2). What is the value and uncertainty of height? Input: A = vo = 4.0 ± 0.2, and B = t = 0.60 ± 10%, then the final expression should be: A*B – 0.5*9.8*B^2 The final value will be: 0.6 ± 0.4 (meters).

Replicate the tactile learning experience at your own place & pace. Meet the virtual assistant that describes tactile graphics just like a specialist and allows blind people to study at home. This educational tool is part of the Tactile Images e-learning platform, where teachers and parents can find, personalize and create interactive tactile graphics, with audio descriptions. The Tactile Images Reader app teleports the voice and knowledge of the teacher at home. How? Let’s say that we have the tactile graphic of an African elephant. You will explore it with both hands, as you usually do, to contextualize. So far so good. But when you place the phone above the graphic, the magic happens. Just point at the ear of the elephant and the smartphone will tell you: ”This is the ear of the elephant. The ears of an African elephant are bigger than the ears of an Indian elephant because they help the elephants cool down by radiating the excess heat. The ears can also be used to communicate visually, flapping ears signifying either aggression or joy.” The descriptions are customizable and can be adapted to the specific needs of every person. The Tactile Images Reader mobile assistant empowers you to discover the world independently. It gives you the freedom to explore untouchable objects and study school subjects based on graphics, such as Maths, Geography or Biology at your own pace. Using this app feels like watching the Discovery Channel for the first time. How does it work? The app works only with interactive tactile graphics from our e-learning platform. Join for FREE right here www.tactileimages.org and get access to a Library of 800 tactile graphics with multilingual descriptions and drawing software that allows teachers and parents to create their own interactive tactile graphics. Download your first interactive catalogue for FREE https://bit.ly/Catalog_UrbanLandscapes, emboss the drawings and explore with the app! Remote teaching and homeschooling have never been easier for blind and visually impaired people! How to use? Position the phone above an interactive tactile graphic. The app will read the QR Code placed in the upper left corner and tell you the title of the graphic. Position the index finger on the Braille-written title (available for the tactile graphics in the Library) and the app will tell you the description of the graphic. Start exploring with both hands. The app will identify the position of the index finger and beep once when you come across an area with descriptions. Point the index finger if you want to find out the description of that area. Preferably, clench your fist and extend the index finger as if you were pointing to that area. Be steady for 3 seconds. The app will send you 3 beeps and deliver the audio description of the area. Additionally, you can touch the QR Code to listen to general information about the subject of the graphic. Features - Audio descriptions can be in these languages: English, French, German, Italian, Turkish, Romanian, Finnish, Spanish - You are free to personalize the descriptions of any graphic - Multi-sensorial learning - Mobile assistant (works anywhere: school, home, park, library, museum, city hall, train station, metro) - You can either hold it with your hand or use a phone holder (Gooseneck) - Modern technologies: AI, machine learning, interactive augmented reality, finger tracking This app was featured in the American Alliance of Museums http://bit.ly/exploration-at-museums and other 35 publications. The Tactile Images e-learning platform was financed by The Romanian Ministry of Culture, the Administration of the National Cultural Heritage, the Civic Innovation Fund, the Orange Foundation, Hewlett Packard Enterprise, OMV Petrom, ING Bank Romania, Microsoft Romania, Electrica SA. This app is created by the Urban Development Association, which has the mission to improve the life quality of blind children through education.