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For many decades, Submarine optical periscopes have used prisms instead of mirrors, for both reflection and magnification. The simplest way to describe it is 2 telescopes pointed at each other. Prisms are used instead of mirrors because they are more rugged, and unlike mirrors, do not require special coatings to keep them from being impaired by environmental factors.
Traditional periscope masts are very long, over 30' in most cases. They are raised and lowered using the ship's main hydraulic systems. All modern submarines have at least 2 periscopes - one for attack (low profile) and the main periscope, which typically has many other functions built into it. Something that's not well known is that the Navigator can hook a Sextant to a Periscope and get a sunline or star fix if the need were to arise.
More recent newer classes of Submarines (e.g., U.S. Virginia and British Astute classes) use a device called a Photonics Mast which replaces the old optical type periscope system. Since it doesn't have to be contained within the pressure hull or raised/lowered from the Control Room like a traditional scope, it means the Control Room can be located in an area not directly under the sail. Photonics masts are essentially digital camera arrays, which have increased functionality over their optical counterparts, and of course since they don't penetrate the hull, if damaged the chance of a flooding casualty is much less.
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How does a crew see the surface of water in a submarine?
Traditionally, by using a periscope to view optically above the surface. As periscopes are a weak point in a submarine - modern nuclear submarines use external cameras instead of periscopes.
What are facts about periscopes?
Periscopes are optical devices that allow users to see objects or views that are not directly in their line of sight. They are commonly used on submarines to observe above-water surroundings without surfacing. Periscopes work by using mirrors to reflect light, enabling users to view images from a different angle.
What does thecaptain of a submarine looks through a?
The captain of a submarine looks through a periscope, which allows them to see above the water while remaining submerged. This instrument consists of a series of mirrors and lenses that provide a view of the surface and the surrounding environment. By using the periscope, the captain can observe other ships, land features, and potential threats without exposing the submarine. Additionally, modern periscopes often incorporate advanced technology, including cameras and sensors, to enhance visibility and situational awareness.
What materials are use for periscopes?
Periscopes are typically made using mirrors, lenses, and a tube-like structure, often constructed from lightweight materials such as aluminum or plastic. The mirrors are used to reflect light so that the viewer can see objects that are not in their direct line of sight.
Why are prisms and lenses used in some periscopes insted of mirrors?
Prisms and lenses are used in some periscopes instead of mirrors to achieve specific optical effects and improve image quality. Prisms can bend light without the need for reflection, allowing for a more compact design and reducing image distortion. Additionally, lenses can focus and correct light paths, enhancing clarity and brightness. Using prisms and lenses can also simplify construction and alignment compared to mirrors, making the periscope more efficient.
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.
Properties of images formed by a periscope?
A periscope can be raised and lowered depending on the depth of a submarine. Periscopes are like a small telescope that can be rotated to take in a 360 degree view of the submarine's surroundings. Periscopes have to be lowered before the submarine is submerged. Periscopes in nuclear submarines are now able to take pictures of surroundings.
What type of lenses are used in a periscope?
A periscope is an instrument for observation from a concealed position. In its simplest form it consists of a tube with mirrors at each end set parallel to each other at a 45-degree angle. This form of periscope, with the addition of two simple lenses, served for observation purposes in the trenches during World War I. Military personnel also use periscopes in some gun turrets and in armoured vehicles.Also known as berinscope.More complex periscopes, using prisms instead of mirrors, and providing magnification, operate on submarines. The overall design of the classical submarine periscope is very simple: two telescopes pointed into each other. If the two telescopes have different individual magnification, the difference between them causes an overall magnification or reduction.
Why do scientist use mirrors?
Scientists use mirrors for various purposes such as reflecting and redirecting light in experiments, telescopes, microscopes, and laser setups. Mirrors are also used for focusing light, creating optical illusions, and in devices like periscopes for viewing objects around corners. Additionally, mirrors are utilized to calibrate and align optical systems accurately.
Who invented the periscopio and what is it for?
A periscope is an instrument for observation from a concealed position. In its simplest form it consists of a tube with mirrors at each end set parallel to each other at a 45-degree angle. This form of periscope, with the addition of two simple lenses, served for observation purposes in the trenches during World War I. Military personnel also use periscopes in some gun turrets and inarmoured vehicles.More complex periscopes, using prisms instead of mirrors, and providing magnification, operate onsubmarines. The overall design of the classical submarine periscope is very simple: two telescopes pointed into each other. If the two telescopes have different individual magnification, the difference between them causes an overall magnification or reduction.Johann Gutenburg was the one who invented it.
What are the uses of regular reflection?
If light didn't reflect off objects, you wouldn't be able to see them. Mirrors are used as coherent reflectors of received light. Mirrors can be used in periscopes to see around corners, or just on their own to see what one looks like.
What is a sentence using submarine?
We all live in a yellow submarine.
