Problem: Add spaces: DnipropetrovskRegionislocatedinthecenterofUkraine,closetothesouth-easternpart.

Spaces added: Dnipropetrovsk Region is located in the center of Ukraine, close to the south-eastern part.

Problem: Add spaces: Asthereis,inthegravitationalfield,anenergydensitythiscorrespondstoanequivalentmassdensityasgivenby(62).

Spaces added: As there is, in the gravitational field, an energy density this corresponds to an equivalent mass density as given by (62).

Problem: Add spaces: Hi,mynameisBluediamondandIam20years.

Spaces added: Hi, my name is Bluediamond and I am 20 years.

Problem: Add spaces: OnehastounderstandthatRayleighwasnowfacedwithadifficultdecision.

Spaces added:
One has to understand that Rayleigh was now faced with a difficult decision.