Discover all that is hidden in the words. Find synonyms, uses, trends, statistics and much more. English dictionary with many images and usage examples.
Lupa brings you award-winning true stories from Radio Ambulante, and the cutting-edge Jiveworld Method, to help you listen and understand Spanish like a native.
Do you look at the keyboard and type each letter at an unbearably slow speed? Impress your friends and family by learning how to type faster! The following steps will increase your ability to touch-type at a faster speed. If you follow the...
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Write & Improve is a free service for learners of English to practise their written English. Submit your written work and receive feedback in seconds, covering spelling, vocabulary, grammar and general style.
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At BlinkLearning, we adapt and distribute digital educational content from more than 100 national and international publishers. Through our learning platform, we offer schools classroom management tools and online/offline access to more than 25,000 digital books.
Perform RF path analysis taking into account the Fresnel Zone clearance, earth curvature and atmospheric refraction. Compute the antenna heights required to clear obstructions.
Accurately calculate the curvature on the ball Earth. Uses a cosine function, works for all distances in both kilometers and miles. Open source on Github.