An angiogram uses X-rays and a special dye (contrast) to take pictures of the arteries in your brain, heart, and kidneys. The dye is injected into a small tube or catheter into an artery in your groin or (sometimes) your arm.
As the cloud collapses the force of gravity drawing the cloud inward gradually becomes stronger because the strength of gravity follows an inverse square law with distance. hoâ¦pe that helps.
Gravitational collapse is the mechanism that reduces the lateral variations in GPE that have developed during the thickening of the crust. (Rey et al, 2001). Gravitaional collapse is driven by the gravitational force (as described in the previous section). This force acts internally to the system.