Around 1886 what was the last name of the individual who demonstrated that radio radiation had all the properties of waves

I believe the correct answer is Hertz.
Heinrich Hertz was a German physicist who lived in the 19th century and is most known for his contributions when it comes to the electromagnetic waves, which he proved existed based on James Clerk Maxwell's electromagnetic theory of light.

The  ancient egyptians  who  built the pyramids  may have been  able  to move massive stone blocks across the desert by wetting the sand in front of a contraption  built  to pull the heavy objects