For over 60 years, seismologists have been tracking a mysterious rhythmic pulse that ripples through the #Earth's crust every 26 seconds.

Researchers have traced the sound to a specific spot off the coast of #Africa, but they still do not know if it is caused by crashing #ocean #waves or a hidden #underwater #volcano.

https://www.popularmechanics.com/science/environment/a70259763/why-does-earth-pulsate-every-26-seconds/

#geology #science #STEM #earthquake #oceanography #volcanology #Nature #Curiosity

Working at the Naval Proving Ground in #Virginia, Dr. Gladys West used complex algorithms to map the #Earth’s irregular "geoid" shape.

Her mathematical foundation, combined with #Einstein’s relativity, is what allows the #GPS on your phone to be accurate within centimeters today.

https://bigthink.com/starts-with-a-bang/gladys-west-einstein-gps/

#math #stem #blackhistory #physics #history #technology #innovation