Detailed text transcripts for TV channel - DW - 20190117:07:54:00
To test these theories the scientists in parts combining their mathematical models with data from rock samples that are millions of years old. using bagnet measurements the researches can detect when and how often such poll reversals have taken place up to now. they have discovered that they have taken place repeatedly. north and south poles have flipped at regular intervals and then flipped back again. over the last several million years there was a polar reversal about every five hundred thous...
Rock Samples Poll Reversals Bagnet Measurements North And South Five Hundred Thousand Magnetic Field
Source: archive.org