Related terms: PVD, peripheral arterial disease, PAD, venous thrombosis, deep vein thrombosis, DVT. Peripheral vascular disease (PVD) involves damage to or blockage in the blood vessels distant from your heartâthe peripheral arteries and veins.Your peripheral arteries and veins carry blood to and from your arm and leg muscles and the organs in and below your stomach area.hen PVD affects only the arteries and not the veins, it is called peripheral arterial disease (PAD). The main forms that PVD may take include blood clots (for example, deep vein thrombosis or DVT), swelling (inflammation), or narrowing and blockage of the blood vessels.
THE VELOCITY OF LIGHT AND MAXWELL'S CONSTANT. The use of the velocity of light, or more generally, the velocity of propagation in vacuum of the electromagnetic waves as a fundamental constant, comes from James Maxwell's Electromagnetic Theory.
In a given strength of univrsal gravity, speed of light is constant and is almost 300000 km/sec. the speed of light is 300,000 or 3*10^5 km/sec. nothing can travel faster than the speed of light. 300,000 km/sec that's what Einstein said but don't you think that it's too much I mean whenever I light up my torch the light looks so ordinary. 186,000 mi/sec x 1.609 km/1 mile = 299,274 km/sec.