On August 27, 1883 the volcanic island of Krakato suffered a cataclysmic eruption. The sound was loud. No, it was SUPER LOUD (http://nautil.us/blog/the-sound-so-loud-that-it-circled-the-earth-four-times)!!! It ruptured eardrums 40 miles away. It could be heard by actual human ears at distances of thousands of miles away, the most distant audible sound reported by an observer on an Indian Ocean island 3,000 miles away. Point is, this sound was YUUUGE!
Sound is an air pressure wave. Even as the sound level fell below the threshold of human hearing, the sound wave continued to propogate away from the source. Hours after the blast, the barometers installed at weather stations around the world saw the spike in air pressure as the wave reached their location. (This is why I used the term "actual human ears" above, to distinguish that observation from the subsequent instrument-based observations). Six hours and 47 minutes after the Krakatoa explosion, a spike of air pressure was detected in Calcutta. By 8 hours, the pulse reached Mauritius in the west and Melbourne and Sydney in the east. By 12 hours, St. Petersburg noticed the pulse, followed by Vienna, Rome, Paris, Berlin, and Munich. By 18 hours the pulse had reached New York, Washington DC, and Toronto. Amazingly, for as many as 5 days after the explosion, weather stations in 50 cities around the globe observed this unprecedented spike in pressure re-occuring like clockwork, approximately every 34 hours. That is roughly how long it takes sound to travel around the entire planet.
There was great interest in these pressure observations (https://books.google.com/books/reader?id=Vk8PAAAAYAAJ&lr=&printsec=frontcover&output=reader&pg=GBS.PR3) in subsequent years. In those days any subject of the British Empire who fancied himself to have a certain level of sophistication, especially if one was posted abroad in the Empire, had his own suite of weather instruments. When it became known that this sound wave was observable in barometric recordings, everybody checked theirs. And sure enough, from all over the world came reports of amateur observers who had captured one or more pulses.
Now, the shape of world in 1883 was thought to be round. These pressure observations from all over the Empire, caused by an event occurring at a known time, provided an opportunity to prove otherwise, were the world some other shape. However, the timing of the pressure wave's arrival at each barometer corresponded to what one would expect for a globe.
On August 27, 1883 the volcanic island of Krakato suffered a cataclysmic eruption. The sound was loud. No, it was SUPER LOUD (http://nautil.us/blog/the-sound-so-loud-that-it-circled-the-earth-four-times)!!! It ruptured eardrums 40 miles away. It could be heard by actual human ears at distances of thousands of miles away, the most distant audible sound reported by an observer on an Indian Ocean island 3,000 miles away. Point is, this sound was YUUUGE!
Sound is an air pressure wave. Even as the sound level fell below the threshold of human hearing, the sound wave continued to propogate away from the source. Hours after the blast, the barometers installed at weather stations around the world saw the spike in air pressure as the wave reached their location. (This is why I used the term "actual human ears" above, to distinguish that observation from the subsequent instrument-based observations). Six hours and 47 minutes after the Krakatoa explosion, a spike of air pressure was detected in Calcutta. By 8 hours, the pulse reached Mauritius in the west and Melbourne and Sydney in the east. By 12 hours, St. Petersburg noticed the pulse, followed by Vienna, Rome, Paris, Berlin, and Munich. By 18 hours the pulse had reached New York, Washington DC, and Toronto. Amazingly, for as many as 5 days after the explosion, weather stations in 50 cities around the globe observed this unprecedented spike in pressure re-occuring like clockwork, approximately every 34 hours. That is roughly how long it takes sound to travel around the entire planet.
There was great interest in these pressure observations (https://books.google.com/books/reader?id=Vk8PAAAAYAAJ&lr=&printsec=frontcover&output=reader&pg=GBS.PR3) in subsequent years. In those days any subject of the British Empire who fancied himself to have a certain level of sophistication, especially if one was posted abroad in the Empire, had his own suite of weather instruments. When it became known that this sound wave was observable in barometric recordings, everybody checked theirs. And sure enough, from all over the world came reports of amateur observers who had captured one or more pulses.
Now, the shape of world in 1883 was thought to be round. These pressure observations from all over the Empire, caused by an event occurring at a known time, provided an opportunity to prove otherwise, were the world some other shape. However, the timing of the pressure wave's arrival at each barometer corresponded to what one would expect for a globe.
Tell me how the measurements corresponded to a globe earth. Why were they exclusive to a round earth? Are there models for sound waves that curve around a surface? As far as I know sound waves propagate from the source similar to ripples in a body of water.
Some more information is definitely required for this to be true evidence of round earth.
Amazingly, for as many as 5 days after the explosion, weather stations in 50 cities around the globe observed this unprecedented spike in pressure re-occuring like clockwork, approximately every 34 hours. That is roughly how long it takes sound to travel around the entire planet.
Tell me how the measurements corresponded to a globe earth. Why were they exclusive to a round earth? Are there models for sound waves that curve around a surface? As far as I know sound waves propagate from the source similar to ripples in a body of water.If the earth were flat the sound would propagate to the edge and then what would happen?
Some more information is definitely required for this to be true evidence of round earth.
Tell me how the measurements corresponded to a globe earth. Why were they exclusive to a round earth?Here is the plot of the first sound wave as it travelled around the globe. The hemisphere illustrated on the right is the globe centered on Krakatoa, the one on the left is the other side of the globe centered on the antipodes of Krakatoa. (FunFact: it is actually quite rare for the antipode of a given spot of dry land to also be on dry land, but this one is!)
So, if reflected by "something at the edge" it would cause echoes at all sorts of times, because the distance from Krakatoa to the edge varies from about 9,000 km to 31,000 km.
So, if reflected by "something at the edge" it would cause echoes at all sorts of times, because the distance from Krakatoa to the edge varies from about 9,000 km to 31,000 km. Done Now you're talkin'! The map on the right has even got Australia about the right shape and shows both poles! Tough about Euroasia being on the rim, but who cares about the few people silly enough to live up there - last time I was there (in spring mind you!) is was far too cold for any self-respecting warm blooded Aussie. Oh with, most of the earth's population live up that area. So what, all these TFES people couldn't care less about the size and shape of Australia on their silly UN map - let's give them a bit of their own back. (http://i1075.photobucket.com/albums/w433/RabDownunder/1892-new-standard-map-Australia_zpsbjox1mgg.png) Australia on North Polar Equidistant Azimuthal Map | Map created by Request an Azimuthal Map (http://ns6t.net/azimuth/) (http://i1075.photobucket.com/albums/w433/RabDownunder/AzimuthalMap%20-%20Krakatoa%20-%205100x6600_zpsqk0gfn2q.jpg) Equidistant Azimuthal Map Centred on Krakatoa |
Perhaps this is further proof that Oceania is really the center point of the firmament. More study is required.FURTHER proof? What was the earlier proof?
Now you're talkin'!
No use coming up with logic, that's too scientific for this place! Maybe the "Ice-Wall" or the "dome" focussed the the sound waves there.Perhaps this is further proof that Oceania is really the center point of the firmament. More study is required.FURTHER proof? What was the earlier proof?
And if reflections off the firmament are the explanation for the recurring pressure waves, what accounts for their convergence on Columbia, in northwestern South America?
That's probably not where you went after a dodgy restaurant!Now you're talkin'!that's where I went in the Time Machine after I ate at that one Mexican restaurant that time...
Perhaps this is further proof that Oceania is really the center point of the firmament. More study is required.DoneNow you're talkin'!
The map on the right has even got Australia about the right shape and shows both poles!
Tough about Euroasia being on the rim, but who cares about the few people silly enough to live up there - last time I was there (in spring mind you!) is was far too cold for any self-respecting warm blooded Aussie.
Oh with, most of the earth's population live up that area.
So what, all these TFES people couldn't care less about the size and shape of Australia on their silly UN map - let's give them a bit of their own back.(http://i1075.photobucket.com/albums/w433/RabDownunder/1892-new-standard-map-Australia_zpsbjox1mgg.png)
Australia on North Polar Equidistant Azimuthal Map
(http://i1075.photobucket.com/albums/w433/RabDownunder/AzimuthalMap%20-%20Krakatoa%20-%205100x6600_zpsqk0gfn2q.jpg)
Equidistant Azimuthal Map Centred on Krakatoa
Yes, I'm quite ;) proud ;) of that map, has all the important things sorted:
Perhaps this is further proof that Oceania is really the center point of the firmament. More study is required.DoneNow you're talkin'!
The map on the right has even got Australia about the right shape and shows both poles!
Tough about Euroasia being on the rim, but who cares about the few people silly enough to live up there - last time I was there (in spring mind you!) is was far too cold for any self-respecting warm blooded Aussie.
Oh well, most of the earth's population live up that area.
So what, all these TFES people couldn't care less about the size and shape of Australia on their silly UN map - let's give them a bit of their own back.(http://i1075.photobucket.com/albums/w433/RabDownunder/1892-new-standard-map-Australia_zpsbjox1mgg.png)
Australia on North Polar Equidistant Azimuthal Map
(http://i1075.photobucket.com/albums/w433/RabDownunder/AzimuthalMap%20-%20Krakatoa%20-%205100x6600_zpsqk0gfn2q.jpg)
Equidistant Azimuthal Map Centred on Krakatoa
Love your map !!! It is obvious from the FE Map currently floating around that Australia is way way out of proportion !!! Why don't any of the Fe supporters realise this??? Perhaps this just shows the ignorance that many FE'ers have about the rest of the world !!
Nice to see USA all shrivelled up in your map centred on Krakatoa !!