periscope
A periscope is an apparatus that allows for observing from a hidden position. The simplest periscope consists of a tube with mirrors placed at each end. (McMahon, 2013) These mirrors are placed 45 degrees apart in a parallel fashion. (McMahon, 2013) A version of this periscope with an additional two lenses helped with warfare in World War I for trench combat, gun turrets and armoured vehicles. Submarines use more complex periscopes involving prisms instead of mirrors. (McMahon, 2013)
The earliest periscope was invented in 1450 during the pilgrimage time by a man by the name of Johann Gutenburg. (Lambe, 2002) It was first invented for people, so they could have the ability to see over people’s heads in large crowds. (Lambe, 2002) In 1865, a man named Sir Howard Grubb decided to look into the periscope. As the First World War was being talked about, Grubbs’ factory was being forced into creating gun sights and periscopes for the war efforts. (History, About) This is when Grubb perfected the periscope to observe the enemy from a concealed hiding spot and to be used in submarines.
A periscope is a fairly easy device to control and use. It works by using two mirrors to bounce light from one spot to another. (Jamison, 2000) The original periscope used two mirrors parallel to each other at a 45 degree angle to the direction that the viewer wishes to see. (Jamison, 2000) Therefore the light then reflects off of each mirror back to the viewers’ eye. (Jamison, 2000) Again, the periscope was designed to allow a person to see around an object or through a wall without putting themselves in severe danger. (Jamison, 2000) Advanced periscopes are still used today.
Periscopes have helped enhance today’s society by helping defend our military. (McMahon, 2013) Without them we would be risking many more lives and submarines would have a difficult time getting around, due to the fact of the unknown above them. (McMahon, 2013)
The History of the Periscope – Inventors –
The earliest periscope was invented in 1450 during the pilgrimage time by a man by the name of Johann Gutenburg. (Lambe, 2002) It was first invented for people, so they could have the ability to see over people’s heads in large crowds. (Lambe, 2002) In 1865, a man named Sir Howard Grubb decided to look into the periscope. As the First World War was being talked about, Grubbs’ factory was being forced into creating gun sights and periscopes for the war efforts. (History, About) This is when Grubb perfected the periscope to observe the enemy from a concealed hiding spot and to be used in submarines.
A periscope is a fairly easy device to control and use. It works by using two mirrors to bounce light from one spot to another. (Jamison, 2000) The original periscope used two mirrors parallel to each other at a 45 degree angle to the direction that the viewer wishes to see. (Jamison, 2000) Therefore the light then reflects off of each mirror back to the viewers’ eye. (Jamison, 2000) Again, the periscope was designed to allow a person to see around an object or through a wall without putting themselves in severe danger. (Jamison, 2000) Advanced periscopes are still used today.
Periscopes have helped enhance today’s society by helping defend our military. (McMahon, 2013) Without them we would be risking many more lives and submarines would have a difficult time getting around, due to the fact of the unknown above them. (McMahon, 2013)
The History of the Periscope – Inventors –