What is periscope diagram?
A periscope works on the principle of reflection of light from one plane mirror placed at an angle(450) parallel to other plane mirror. Diagram shows the position of mirrors and light rays. In the figure a and b are the positions of mirror at an angle of 450.
How is a periscope constructed?
Construction. Periscopes can be constructed using a pair of flat mirrors or prisms and a rectangular hollow tube that has a viewing window at the top and bottom of the tube. The mirrors within this structure are fixed at an angle of 45o at the two ends of the rectangular hollow.
What is periscope principle?
A periscope is a useful example of the law of reflection at work. In a periscope, light from an object strikes the top mirror at 45° and bounces off at the same angle. This sends light directly down the tube and onto the lower mirror. This mirror, also at a 45° angle, reflects light directly to your eye.
What is a periscope Grade 6?
A periscope is defined as an instrument used for observing over, around or through an obstacle or object which is prevented by direct line of sight. It consists of an outer case with mirrors at each end at 45° angle. These mirrors are placed parallel to the surface.
Why periscope is used?
periscope, optical instrument used in land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover, behind armour, or submerged.
What is periscope software?
Periscope Software Periscope Data is Business Intelligence software that allows users to keep data in one interactive dashboard. Functionalities include dashboards and scorecards, data warehousing, data mining and predictive analytics, ETL, OLAP, a query and report writer, and performance management.
How do you make a simple periscope?
Place a curved elbow joint pipe over each end of the pipe to make a periscope shape. Have the two openings point in opposite directions if you want to look around corners or over obstacles. Find two mirrors that fit the pipe. These mirrors must be small enough to insert each one into one end of the pipe.
Why is Kaleidoscope used for?
Kaleidoscope is an optical toy consisting of two mirrors at a particular angle. Some common uses of the kaleidoscope are: Kaleidoscope produces beautiful patterns that are used by fashion designers. A kaleidoscope is used as a toy for entertainment.
Why do we use a plane mirror?
Plane mirror causes regular reflection of light. When a parallel beam of light is incident on a plane mirror it is reflected back parallely. Due to this property a plane mirror is used to see our image and not a rough surface.
Why plane mirror is used in periscope?
In periscopes, plane mirrors are used to bend light so that image of an object can be brought down to a lower level. Due to this property, plane mirror cast upright and sharp optical images of any distant object and the image formed is at the same distance from the mirror as its object distance.
How does a periscope work?
A periscope works on the basis of laws of reflection of light. Any object in the line of sight reflects the light making it visible in the periscope. The mirrors are placed at an angle of 45° such that when light falls on one of the mirrors, it gets reflected back making it fall on the other mirror which further gets reflected back to
Why are mirrors placed at 45 degrees in a periscope?
The mirrors are placed at an angle of 45° such that when light falls on one of the mirrors, it gets reflected back making it fall on the other mirror which further gets reflected back to the observer’s eyes. But in more complex periscopes, prisms are used in place of mirrors.
What size box do I need to make a periscope?
Any sized box works as long as you have big enough mirrors positioned at a 45° angle. Make a periscope with a really long tube. The longer the tube is, the smaller the image you will see. Note: Periscopes in tanks and submarines have magnifying lenses between the mirrors to make the reflected image bigger.
Why do submarines have periscopes?
Submarines have periscopes so that people inside can what is on the surface of the water. A periscope is a useful example of the law of reflection at work. It’s important that your mirrors are placed at a 45° angle, because light always reflects away from a mirror at the same angle that it hits it.