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What is the instrument used in a sumberine to see above the surface of water?
A periscope is the instrument used in a submarine to see above the surface of water. It works by using mirrors to reflect light down into the submarine while allowing for observation of the surface without exposing the submarine itself.
How much does a periscope cost?
The cost of a periscope can vary depending on the size, quality, and brand. On average, a simple periscope for recreational use can range from $20 to $100. More specialized or military-grade periscopes can cost several thousand dollars.
How does a periscope work?
Old trench periscopes worked by using two mirrors to bounce light from one place to another. A typical periscope uses two mirrors at 45 degree angles to the direction one desires to see. The light bounces from one to the other andthen out to the persons eye.If there is an object in front of you, any nearby light source (i.e the sun, a lamp etc.) bounces straight rays of light onto the object and then into your eyes, enabling you to see it. However, if the object is not within straight lines of your eyes, the light will not find them and you will not be able to see the object (since light only travels in straight lines).But a periscope works using the laws of reflection. Reflective objects like mirrors work by bouncing light so it carries on in a straight line but alters it's route, according to the angle of the mirror to the light source. This means that if the mirror was at a 45 degree angle to the light source then it would bounce off at a perpendicular (90 degree) angle. That is how a periscope works.The important fact to note when considering a periscope is that the laws of reflection mean that the light hitting a mirror at an angle is reflected off at twice the angle of the mirror. Thus a 45 degree mirror reflects light rays through 90 degrees.Submarine PeriscopesSubmarine optical periscopes don't use mirrors due to their fragility and susceptibility to environmental conditions/changes, requiring special coatings. Instead, they use refractive prisms.The newer U.S. Virginia-class and British Astute-class boats use neither; they use a Photonics Mast, which is essentially a hi-resolution camera array that is raised above the waterline. This has many advantages, the primary one being that the Control Room need not be directly under the main sail as in all previous modern submarine designs.
Why does foil absorbs light mean that it is opaque?
There are three possible characteristics to a materials reflectivity, which are all due to the orientation of its molecules: Transparent - light travels through the material Reflective - light is redirected away from the material Opaque - light is absorbed by the material Foil absorbing light means it is opaque because that is the definition of the term.
What is a periscope made of?
A Periscope is a type of observation material used during World War I. It is made up of two mirrors in parallel position with an angle of 45 degree placed inside a case. Periscope can also be seen on submarines and other military equipment.
Why are the mirrors in a periscope placed at an angle of 45 degree with the vertical?
The mirrors in a periscope are placed at a 45-degree angle to the vertical to allow light from an object to be redirected through the periscope. When light hits the first mirror at this angle, it reflects upward towards the second mirror, which then reflects it horizontally to the viewer's eye. This arrangement enables the user to see over obstacles while maintaining a straight line of sight. The 45-degree angle is crucial for effectively redirecting the light path without distortion.
How many times is light reflected in periscope?
The light is refracted each time it crosses the boundary between two media. If it enters a transparent object and then leaves the same object . . . like a lens, a glass window pane, or a block of jello . . . that's two refractions.
How does a periscope use light?
A periscope uses mirrors to reflect light. Light enters the periscope through a top opening and is then reflected off internal mirrors to allow the viewer to see objects at a different angle from the periscope's location without exposing themselves.
What property of light does a periscope make use of?
A periscope makes use of the property of reflection to redirect light. Light enters one end of the periscope, reflects off mirrors inside the periscope, and then exits at the other end, allowing the viewer to see objects outside their direct line of sight.
How does the periscope use the properties of light?
A periscope uses the property of reflection to redirect light. Light enters through one end of the periscope, reflects off multiple mirrors inside the periscope, and exits out the other end, allowing the viewer to see an object that is not in their direct line of sight.
Will a periscope reflect or refract light?
A periscope uses mirrors to reflect light, allowing users to see objects not in direct line of sight.
Is a periscope a concave lens?
No, a periscope uses mirrors to reflect light and change the direction of the image, not a concave lens which diverges light rays.
How refraction works in a periscope?
In a periscope, light enters through one end of the periscope and undergoes refraction at the first mirror, which changes the direction of light. The light then reflects off another mirror and exits the other end of the periscope. This allows the viewer to see objects that are not in a direct line of sight.
How does the length of the periscope affect the size of the image seen?
The length of the periscope does not affect the size of the image seen. The size of the image is determined by the mirrors inside the periscope that reflect the light, not the length of the periscope itself.
What type of waves are being used in a periscope?
Visible waves, ie, visible light is piped through a periscope.
How does a periscope make light turn corners?
A periscope uses angled mirrors to reflect light at different angles, allowing it to travel around corners. The mirrors inside the periscope are set up to guide the light path from the object at one end to the observer's eye at the other end, creating the illusion that the observer is seeing directly in front of them.
How does a periscope use reflection?
A periscope uses reflection by directing light at an angle through two mirrors to view objects that are not in direct line of sight. The first mirror at the top of the periscope reflects light down, while the second mirror reflects it out to the observer, allowing them to see objects above the periscope's position.
