thats a live
as I understand from my parents who were working in London at the time of WW2 before my father went to war...it was very scary, because when you came out of the shelter, you did not know if your home was still there or flattened.
around 1799 the first siren was invented by the Scottish natural philosopher (physicist) John Robinson. Originally Robison's sirens were used as musical instruments. They powered some of the pipes in church organs.
The A.R.P. are the air raid percausion
In Britain, like everyone else, they went down to the air-raid shelters (usually the Underground railway stations), if they lived in the city. In the suburbs, they went into so-called Anderson shelters dug into backyards.
Douglas haigs plan went wrong in world war 1
An air raid warden.
as I understand from my parents who were working in London at the time of WW2 before my father went to war...it was very scary, because when you came out of the shelter, you did not know if your home was still there or flattened.
An air raid siren. The song, though often cited as being about Vietnam, was probably about WWII.
around 1799 the first siren was invented by the Scottish natural philosopher (physicist) John Robinson. Originally Robison's sirens were used as musical instruments. They powered some of the pipes in church organs.
Go out and buy a World War 2 documentary. I remember once as a child hearing the air raid sirens all go off in wakefield, UK. Yes you could go and buy a video from world war two, you could search 'carter air raid siren' on the web... Carter being the UK air raid siren, and that will be close. It is a two tone siren that raises and falls in pitch, but they do not have the effects caused by space, there are some Doppler effects from sirens further away, and the whole effect is more mournful than you can imagine, stood in the streets very late at night with this siren wailing from our local town hall, the echos from the town and village halls in surrounding areas..... and other small groups of people stood in silence apart from the wailing of the sirens.
It's probably an old air raid siren left over from the second world war and subsequently the cold war. Most where removed after the stand down of the ROC (Royal Observer Corp) and the UKWMO (UK Weapons Monitoring Organisation) after the collapse of the Berlin wall and the end of the cold war. Some have been left in place as a flood defence warning system near rivers at risk of flooding or in coastal area's. I hope this helps
The Chrysler 'BigRed' Air Raid Siren was an air raid siren produced during the Cold War era. It's six horns were each 3 feet (0.9 m) long. The siren could be heard from a distance of 4 to 5 miles (6.4 to 8.0 km) away and had an output of 138 dB and 30,000 watts. They were 12 feet (3.7 m) long, built atop a quarter section of a Dodge truck chassis rail, and weighed an estimated 3 short tons (2.7 t).
when did the dambuster raid happen in ww2
Although mechanical sirens existed before the 1900's, Federal Sign and Signal Corp (then Federal electric) purchased the patents for an electronic siren in 1915. A common purchaser were coal miners used to warn of a disaster. By World War 2 many municipalities purchased them to warn in case of air raid. However, not all locations had electricity, so the search was on to find a non-electric siren. Chrysler corporation, was a big war time supplier created what it called the "victory siren". Powered by a hemispherical engine ( a hemi ) to date it is the loudest siren ever produced providing 138db (loud enough to cause ear damage) and could be heard a mile away
Probably... well... Air Raid Precautions...
yes!
go in your bomb shelter.