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  2. Audiovisual education - Wikipedia

    en.wikipedia.org/wiki/Audiovisual_education

    In the current digital world, audiovisual aids have grown exponentially with multimedia such as educational DVDs, PowerPoint, television educational series, YouTube, and other online materials. The goal of audio-visual aids is to enhance the teacher's ability to present the lesson in a simple, effective, and easy to understand for the students.

  3. Overhead projector - Wikipedia

    en.wikipedia.org/wiki/Overhead_projector

    The opaque projector, or episcope is a device which displays opaque materials by shining a bright lamp onto the object from above. The episcope must be distinguished from the diascope , which is a projector used for projecting images of transparent objects (such as films or slides), and from the epidiascope , which is capable of projecting ...

  4. Can You Find the Hidden Objects in These Pictures? - AOL

    www.aol.com/hidden-objects-pictures-202637166.html

    Below, you’ll find an assortment of images with hidden objects. Think of them as hidden picture games for all moods and seasons. Up the challenge by giving yourself only 45 seconds to spot each ...

  5. Opacity - Wikipedia

    en.wikipedia.org/wiki/Opacity

    An opaque substance transmits no light, and therefore reflects, scatters, or absorbs all of it. Other categories of visual appearance, related to the perception of regular or diffuse reflection and transmission of light, have been organized under the concept of cesia in an order system with three variables, including opacity, transparency and ...

  6. Projector - Wikipedia

    en.wikipedia.org/wiki/Projector

    Swiss mathematician, physicist, astronomer, logician and engineer Leonhard Euler demonstrated an opaque projector, now commonly known as an episcope, around 1756. It could project a clear image of opaque images and (small) objects. [35] French scientist Jacques Charles is thought to have invented the similar "megascope" in 1780.

  7. YouTube's Ms. Rachel takes on first words and potty training ...

    www.aol.com/youtubes-ms-rachel-takes-first...

    Rachel Accurso, better known as Ms. Rachel, has become a beloved figure in the world of children's education through her YouTube videos, earning billions of views. YouTube's Ms. Rachel takes on ...

  8. Opaque projector - Wikipedia

    en.wikipedia.org/wiki/Opaque_projector

    The opaque projector, or episcope is a device which displays opaque materials by shining a bright lamp onto the object from above. The episcope must be distinguished from the diascope , which is a projector used for projecting images of transparent objects (such as films), and from the epidiascope , which is capable of projecting images of both ...

  9. Cutaway drawing - Wikipedia

    en.wikipedia.org/wiki/Cutaway_drawing

    According to Diepstraten et al. (2003), "the purpose of a cutaway drawing is to allow the viewer to have a look into an otherwise solid opaque object. Instead of letting the inner object shine through the surrounding surface, parts of outside object are simply removed.

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