Information came from the following websites :
en.wikipedia.org
firstworldwar.com
eandt.theiet.org
wio.ru
ww1facts.net
oldmagazinearticles.com
science.howstuffworks.com
historylearningsite.co.uk
Spartacus-educational.com
glogster.com
wwvets.com
x-raymachineproject.yolasite.com
history.amedd.army.mill
aip.org
margaretalmon.com
ar15.com
mentalfloss.com
en.wikipedia.org
firstworldwar.com
eandt.theiet.org
wio.ru
ww1facts.net
oldmagazinearticles.com
science.howstuffworks.com
historylearningsite.co.uk
Spartacus-educational.com
glogster.com
wwvets.com
x-raymachineproject.yolasite.com
history.amedd.army.mill
aip.org
margaretalmon.com
ar15.com
mentalfloss.com