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Why does partial reflection and refraction still occur when the light is travelling more slowly in acrylic than in water?
Wiki User
∙ 9y ago
It seems that you have not got a hold on refraction yet. Refraction occurs when a light is moving from one kind of medium to another kind. Now the slower the light moves more is the refraction. In fact refraction occurs due to change in the velocity of light in different mediums.
When light moves from a rarer medium to a denser medium like say from air to glass, The speed of light decreases and the light moves towards the normal. A part of the light gets reflected back into the air as it falls on a denser medium.
The reflection you see in the mirror is not perfect as due to the thickness of the glass most of the light refracts and some reflects.
Wiki User
∙ 9y ago
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What tajes place when the angle of incidence is smaller than the critical angle?
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Can the teeth in a Valplast partial break or break out?
break out The teeth (usually made from acrylic) are bonded to the partial using mechanical interlocks. When properly fabricated, the bond is extremely strong. But in some cases the teeth themselves might crack or weaken and can then separate. In those cases, a dentist can send the partial to a qualified dental lab to have the tooth reattached or replaced.
The saddle of a removable partial denture serves what purpose?
The saddle of a removable partial denture serves two purposes. First, it replaces the bone which previously supported your natural tooth and has resorbed after extraction. This supports your facial contours , shapes your sound chamber and provides a base of support to the partial in the areas where it will be riding on tissue to distribute biting forces. Secondly, it provides retention for the artificial premanufactured denture teeth through means of chemical bond with acrylic teeth and mechanical encapture with porcelain teeth. Typically the saddle is the pink acrylic part of a removable partial denture, but may be metal. flexible resin or another material. San Francisco Denturist
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Should you keep your metal partial denture in water over night or leave it dry?
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