Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: creationvger on 12/01/2009 22:42:29

Title: Looking for earth x ray article using gravitational field
Post by: creationvger on 12/01/2009 22:42:29

I am looking for a magazine article from between 92 - 98 where they x-rayd the Earth using its own gravitational field to do it. In the x-ray there were three large oval shaped objects that they claimed were not made of normal matter. How can I find this?

Title: Looking for earth x ray article using gravitational field
Post by: DoctorBeaver on 12/01/2009 22:44:17

How can you X-ray anything using a gravitational field?

Title: Looking for earth x ray article using gravitational field
Post by: RD on 12/01/2009 22:53:49

Seismology is used to image Earth's interior: it's like sonar, not an x-ray.
http://www.scientificblogging.com/news/high_res_images_show_details_of_earths_structure

Title: Looking for earth x ray article using gravitational field
Post by: RD on 12/01/2009 23:09:39

Quote from: DoctorBeaver on 12/01/2009 22:44:17

How can you X-ray anything using a gravitational field?

Maps of the variations in surface gravity can reveal hidden deformations in the crust like the Chicxulub crater...

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http://miac.uqac.ca/MIAC/chicxulub.htm

Title: Looking for earth x ray article using gravitational field
Post by: DoctorBeaver on 12/01/2009 23:36:14

I know. But that's not X-ray.

Title: Looking for earth x ray article using gravitational field
Post by: RD on 12/01/2009 23:58:16

People do use the term "X-ray" to mean "image hidden structure", even though X-rays are not actually used.

Creationvger's "oval objects not made from normal matter" sound like science fiction to me,

although strictly speaking the Earth and its inner cores are "oval" (oblate spheroids).