Alat ini digunakan sekitar Perang Dunia Pertama oleh pihak British, bertujuan untuk mendengar bunyi kehadiran kapal terbang musuh tatkala ketika itu, radar masih belum dicipta.
A few years ago we posted about these beautiful parabolic structures made of concrete, as a way to magnify sound in the days of World War I. The British used them to listen for incoming enemy fighters in an era that antedated radar.
[Sumber]
MalaysiansMustKnow: What if your car is damaged and broken into at a shopping mall. Is the shopping mall liable? Informative clicks. Tak rugi apa-apapun jika anda mengetahui maklumat ini.
A few years ago we posted about these beautiful parabolic structures made of concrete, as a way to magnify sound in the days of World War I. The British used them to listen for incoming enemy fighters in an era that antedated radar.
[Sumber]
MalaysiansMustKnow: What if your car is damaged and broken into at a shopping mall. Is the shopping mall liable? Informative clicks. Tak rugi apa-apapun jika anda mengetahui maklumat ini.
0 Comments
