The Power of Tiny Distortions: Weak Lensing I
<p>As we have discussed earlier, a significantly heavy mass can divert the path of light and create lens-like imaging. Still, the only difference in this effect is that the distortion is due to the gravitational influence of the heavier body. This creates a distortion or shearing effect in the object's shape, helping us determine whether it's gravitationally lensed. This phenomenon is called gravitational lensing, which can be considered an accidental discovery as it was discovered while Eddington and his team were verifying Einstein's theory of general relativity in 1919. Gravitational lensing has since then been one of the most potent tools for cosmologists and astrophysicists in determining the existence of celestial objects that may be unobserved or not recognized to come into the foresight.</p>
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