(1) Lorentz believed in the aether which is known for being the place that all velocities should be measured with respect to, Did lorentz believe that the speed of light is invariant to all observer's?
As he developed "the transformation under which Maxwell's equations are invariant when transformed from the aether to a moving frame"
So measuring a velocity not with respect to the aether should stil give correct results, or did his aether theory still have to give V measures with respect to the aether
Lorentz first came up with the correct coordinate transformation that is consistent with maxwells equations. The property of such transformation shows that the speed of light is invariant.
So why is einstein credited with time dialation/ length contraction? When it was lorentz that first proposed the correct transformation? Aether or not.