BLACK HOLE T-SHIRTBlack Hole T Shirt Even light cant escape the lure of this black hole T shirt design. The front features a graphical representation of spacetime curvature caused by a black hole, as defined by German astronomer, Karl Schwarzschild, who discovered the critical radius at which a gravitationally collapsing celestial object becomes a black hole. The back shows James Clerk Maxwells four fundamental equations, which describe the behavior of electric and