Talk:Barograph

merge with other types of recording devices?
There are a number of very similar recording devices for other quantities, such as the thermograph for temperature, the hygrograph for humidity, and the meteorograph that basically has all three in one device. There's not much point in having four separate articles in my mind, so would anyone object to a merge? I'd propose meteorograph as perhaps the most neutral of those four names (not implying any one of temperature, pressure, or humidity), but I'm open to other suggestions as well. --Delirium 10:48, 9 January 2007 (UTC)
 * Barographs are also used in aviation for measuring altitude. You will need a citation for the main heading name, don't just make one up. Also you need to apply merge tags to all 4 articles for a period of time to collect comments. Dhaluza 11:36, 9 January 2007 (UTC)
 * I just checked around a bit and found over 50 articles linking to barograph. Also these are types of chart recorders, so it could also be argued that they should all be combined. I suggest combining Thermograph and Hygrograph under Thermo-hygrograph for now. I created the stubs and tags. 12:18, 9 January 2007 (UTC)
 * I hardly made up meteorograph; it's a well-known term with at least 200 or so years of use. But perhaps chart recorder is a more straightforward term? I see we already have a decent article there, but it seems to duplicate a lot of this. In any case I didn't put a merge template on because I'm just raising the idea for now and looking for suggestions (I posted a comment on the Weather WikiProject as well); I don't plan to actually merge them yet. --Delirium 16:51, 10 January 2007 (UTC)


 * Sorry, didn't mean to suggest you made it up. I created a disamb page for meteorograph] to support this as well.Dhaluza 13:33, 11 January 2007 (UTC)

In 1883, the Indonesian volcano Krakatau exploded. The explosion generated a pressure anomaly in the atmosphere, which was in detectable as an audio disturbance at about 4,000 km, whilst the overpressure was detected on baraographs located in various towns and cities around the world. When the Royal Society in London was compiling its report into the eruption, the barograph records from various people all over the world were obtained and studied. Analysis of the records indicated that the pressure wave passed from Krakatau (6 N 106 E) to the antipode (6 S 74 W)in Columbia seven times. This indicates that the over-pressure contained sufficient energy to enable it to travel over 140,000 km (7 times half world distance of 20,000 km). The Great Circle path from Krakatau is omnidirectional so any disturbance recorded in London would have arrived at other locations that were located ~95 degrees of arc from Krakatau at the same time. It was this information that scientists used to show that the atmosphere was not static but a dynamic continuum. A readable account of the explosion at Krakatau is presented by Simon Winchester in his book "Krakatau - the Day the World Exploded.86.156.94.96 (talk) 17:34, 28 April 2011 (UTC)

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