## Saturday, January 4, 2020

### Finding an Antipode

An antipode is a point on the opposite side of the Earth from another point; the place youd end up if you were able to dig directly through the Earth. Unfortunately, if you try to dig to China from most places in the U.S., you would end up in the Indian Ocean as the Indian Ocean contains most of the antipodes for the United States. How to Find an Antipode When locating your antipode, recognize that youll be flipping hemispheres in two directions. If youre in the Northern Hemisphere then your antipode will be in the Southern Hemisphere. And, if youre in the Western Hemisphere then your antipode will be in the Eastern Hemisphere.Ã‚   Here are some steps to manually compute an antipode.Ã‚   Take theÃ‚  latitudeÃ‚  of the place for which you want to find the antipode and convert it to the opposite hemisphere. Well use Memphis as an example. Memphis is located at approximately 35Ã‚ ° North latitude. The antipode of Memphis will be at 35Ã‚ ° South latitude.Take theÃ‚  longitudeÃ‚  of the place for which you want to find the antipode and subtract the longitude from 180. Antipodes are always 180Ã‚ ° of longitude away. Memphis is located at approximately 90Ã‚ ° West longitude, so we take 180-9090. This new 90Ã‚ ° we convert to degrees East (from the Western Hemisphere to the Eastern Hemisphere, from degrees west of Greenwich to degrees east of Greenwich) and we have our location of Memphis antipode - 35Ã‚ °S 90Ã‚ °E, which is in the Indian Ocean far to the west of Australia. Digging Through the Earth From China So where exactly are the antipodes of China? Well, lets compute the antipode of Beijing. Beijing is located at approximately 40Ã‚ ° North and 117Ã‚ ° East. So with step one above, we are looking for an antipode that is 40Ã‚ ° South (converting from Northern Hemisphere to Southern Hemisphere). For step two we want to move from the Eastern Hemisphere to the Western Hemisphere and subtract 117Ã‚ ° East from 180 and the result is 63Ã‚ ° West. Therefore, the antipode of Beijing is located in South America, near Bahia Blanca, Argentina. Antipodes of AustraliaÃ‚   How about Australia? Lets take an interestingly named place right in the middle of Australia; Oodnadatta, South Australia. It is the home of the highest recorded temperature on the continent. Its located near 27.5Ã‚ ° South and 135.5Ã‚ ° East. So were converting from Southern Hemisphere to Northern Hemisphere and Eastern Hemisphere to Western Hemisphere. From step one above we turn 27.5Ã‚ ° South to 27.5Ã‚ ° North and take 180-135.544.5Ã‚ ° West. Therefore the antipode of Oodnadatta is located in the middle of the Atlantic Ocean. Tropical Antipode The antipode ofÃ‚  Honolulu, Hawaii, located in the middle of the Pacific Ocean is located in Africa. Honolulu is located near 21Ã‚ ° North and 158Ã‚ ° West. Thus the antipode of Honolulu is located at 21Ã‚ ° South and (180-158) 22Ã‚ ° East. That antipode of 158Ã‚ ° West and 22Ã‚ ° East is in the middle of Botswana. Both locations are within the tropics but Honolulu is located near the Tropic of Cancer while Botswana lies along the Tropic of Capricorn.Ã‚   Polar Antipodes Finally, the antipode of the North Pole is the South Pole and vice-versa. Those antipodes are the easiest on the Earth to determine.