Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / gulshan kumar
Periscope:-It is a device for viewing objects which are above the eye level of the observer, or are placed in such a way that direct vision is obstructed. In its simplest form it consists of a long tube, but at right angles at two places. At each bend a right angled prism is so situated that by total internal reflection at the longest faces, light is turned through an angle 90oC by each prism. Thus light from a viewed object enters the observer’s eye in a direction parallel to but below the original direction of the object.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Why ”quantum physics” is named as it is? : quantum physics
What is the difference between dynamic strain aging and strain aging?
For two objects separated by a distance d, if the mass of one of the objects is doubled, what will happen to the gravitational attraction between them?
How does a sound wave travel in air?
Explain what does hull speed mean?
What is the Unit for charge?
Explain the balanced field takeoff?
What formula is most appropriate to compute the kinetic energy of a block of ice sliding down an inclined plane?
Explain how do you separate hydrogen and oxygen gases in industrial electrolysis of water process?
Explain what is meant by 4th dimension?
What is channel?
what is difference b/w scr &rectifier&mechanism of triac experiment
Find the physical quantity in units from the equation: (Force*Distance)/(Velocity*Velocity)
Explain virtual image?
mitre gears are same as
