Question

who discovered core as the structural element of the earth in 1906​

Answer 1

Answer:

Oldham

The size of the outer core is more than a half of the Earth in radius. The size of inner core is about one fifth of the Earth in radius and slightly smaller than the moon. The Earth's core was discovered by Oldham in 1906 and the inner core was discovered by Lehmann in 1936 using seismic waves.

Answer 2

Answer:

Oldham

The size of the outer core is more than a half of the Earth in radius. The size of inner core is about one fifth of the Earth in radius and slightly smaller than the moon. The Earth's core was discovered by Oldham in 1906 and the inner core was discovered by Lehmann in 1936 using seismic waves.