A fresh stool sample is cultured to identify the cause of diarrhea and disease carriers. Most common pathogens, such as Salmonella species, Shigella, and E coli 0.157, can be grown on standard media. Yersinia and Campylobacter require a special culture medium.
And while scientists have never sent a probe to our planetâs core to obtain accurate measurements, various estimates have been made. For instance, it is believed that the temperature of the Earthâs inner core is as high as 7000 Â°C, whereas the outer core is thought to be between 4000 and 6000 Â°C. Meanwhile, the mantle, the region that lies just below the Earthâs outer crust, is estimated to be around 870 Â°C.
A team of scientists has measured the melting point of iron at high precision in a laboratory, and then drew from that result to calculate the temperature at the boundary of Earth's inner and outer core â now estimated at 6,000 C (about 10,800 F). That's as hot as the surface of the sun.The difference in temperature matters, because this explains how the Earth generates its magnetic field. The Earth has a solid inner core surrounded by a liquid outer core, which, in turn, has the solid, but flowing, mantle above it.There needs to be a 2,700-degree F (1,500 C) difference between the inner core and the mantle to spur thermal movements that â along with Earth's spin â create the magnetic field.The previously measured core temperature didn't demonstrate enough of a differential, puzzling researchers for two decades.arth's internal engine is running about 1,000 degrees Celsius (about 1,800 degrees Fahrenheit) hotter than previously measured, providing a better explanation for how the planet generates a magnetic field, a new study has found.