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The final product will be the public Twinspace, with all the activities of the project for everybody to learn from our experience. But the main outcome will be integrating technology in my Physics lessons with the help of my students. I hope they will become aware of the importance of physics in nature through their research.

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Духот на Џон Хенри Пепер

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Духот на Џон Хенри Пепер

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John Henry Pepper

https://en.wikipedia.org/wiki/John_Henry_Pepper

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Movie Maker: Day of researchers in our classroom

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Free online movie and video maker with photos, videos, music, text and effects. Share by email, Facebook, YouTube, Twitter, blogs, burn to DVD.

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Light enters the top lens of a periscope, reflects off a mirror set at a 45 degree angle, travels down the periscope tube, and reflects off a second mirror, also set at a 45 degree angle. Light that reflects off the second mirror exits through the bottom lens and into the eye of the user.

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Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is the visible spectrum that is visible to the human eye and is responsible for the sense of sight. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres (nm), or 4.00 × 10−7 to 7.00 × 10−7 m, between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths).

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The angle between the direction of motion of the oncoming wave and a perpendicular to the reflecting surface (angle of incidence) is equal to the angle between the direction of motion of the reflected wave and a perpendicular (angle of reflection). Reflection at rough, or irregular, boundaries is diffuse.

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Refraction is the change in direction of wave propagation due to a change in its transmission medium.

The phenomenon is explained by the conservation of energy and the conservation of momentum. Owing to the change of medium, the phase velocity of the wave is changed but its frequency remains constant. This is most commonly observed when a wave passes from one medium to another at any angle other than 0° from the normal. Refraction of light is the most commonly observed phenomenon, but any type of wave can refract when it interacts with a medium, for example when sound waves pass from one medium into another or when water waves move into water of a different depth. Refraction follows Snell's law, which states that, for a given pair of media and a wave with a single frequency, the ratio of the sines of the angle of incidence θ1 and angle of refraction θ2 is equivalent to the ratio of phase velocities (v1 / v2) in the two media, or equivalently, to relative indices of refraction (n2 / n1) of the two media.