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Interactive Java Tutorials Refraction of Light Refraction occurs as light passes from one medium to another only when there is a difference in the index of refraction between the two materials. The effects of refraction are responsible for a variety of familiar phenomena, such as the apparent bending of an object that is partially submerged in water and the mirages observed on a dry, sandy desert. The refraction of visible light is also an important characteristic of lenses that enables them to focus a beam of light onto a single point. This interactive tutorial explores how changes to the incident angle and refractive index differential between two dissimilar media affect the refraction angle of light at the interface.
נפיצה גלים
מראה היא משטח מלוטש המחזיר את האור בצורה מסודרת, כך שבהחזרת האור משתקפת דמות. רוב המראות עשויות מזכוכית מלוטשת, המצופה מצידה האחד בשכבה דקה של מתכת מוכספת. הציפוי קולט את קרני האור, משקף אותם ומחזיר אותם לעבר העצם שניצב לפני המראה. כל המשתקף במראה הוא בבואה נאמנה של המקור, ללא עיוותים.
פעילות מראות
Rami Arieli: "The Laser Adventure"
Multiple Images If you place an object between two hinged mirrors, light from the object bounces back and forth between the mirrors before it reaches your eyes. An image is formed in the mirrors each time the light bounces, forming multiple images. Click to change the angle of the mirrors and notice how the number of reflected images changes. Is there a relationship between the size of the angle and the number of reflected images? Notice the formula above changing as you adjust the angle of the mirrors.
Multiple Images - Interactive Java Tutorial
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