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  2. Blackboard Inc. - Wikipedia

    en.wikipedia.org/wiki/Blackboard_Inc.

    Blackboard Collaborate was created in July 2010 and is used by K-12 schools and higher education institutions for professional development and distance learning. It is written in Java . The platform is also used by businesses for distance learning and for conferencing [80]

  3. Blackboard Learn - Wikipedia

    en.wikipedia.org/wiki/Blackboard_Learn

    Blackboard Learn (previously the Blackboard Learning Management System) is a web-based virtual learning environment and learning management system developed by Blackboard Inc. The software features course management, customizable open architecture, and scalable design that allows integration with student information systems and authentication ...

  4. Annie Hall - Wikipedia

    en.wikipedia.org/wiki/Annie_Hall

    Budget. $4 million. Box office. $44 million. Annie Hall is a 1977 American satirical romantic comedy-drama film directed by Woody Allen from a screenplay written by Allen and Marshall Brickman, and produced by Allen's manager, Charles H. Joffe. The film stars Allen as Alvy Singer, who tries to figure out the reasons for the failure of his ...

  5. Is Dark Mode Better for Your Eyes? - Healthline

    www.healthline.com/health/is-dark-mode-better...

    Dark mode may work to decrease eye strain and dry eye for some people who spend a lot of time staring at screens. However, there’s no conclusive date that proves dark mode works for anything ...

  6. What Are Contrast Sensitivity Issues With Vision? - WebMD

    www.webmd.com/eye-health/contrast-sensitivity...

    Contrast sensitivity is the ability to tell the difference between two similar colors or shades of gray. It helps you recognize an object as being separate from the background behind it. Contrast ...

  7. Blackboard - Wikipedia

    en.wikipedia.org/wiki/Blackboard

    Uses. Reusable writing surface on which text or drawings are made. A blackboard or a chalkboard is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.

  8. How Do I Reduce Effects of Blue Light? - WebMD

    www.webmd.com/eye-health/blue-light-reduce-effects

    Screen breaks are most important in the evening. Try to power down your devices at least 3 hours before bed. This can help stop blue light from affecting your body’s release of the sleep hormone ...

  9. Chalkboard scraping - Wikipedia

    en.wikipedia.org/wiki/Chalkboard_scraping

    Chalkboard scraping. Scraping a chalkboard (also known as a blackboard) with one's fingernails produces a sound and feeling which most people find extremely irritating. The basis of the innate reaction to the sound has been studied in the field of psychoacoustics (the branch of psychology concerned with the perception of sound and its ...