I'm Amber and I'm from Ireland. This is a blog mostly about physics but with some other interesting things thrown in. So if you have an interest (as I do) in astrophysics, particle physics, theoretical physics, mathematics, technology and other science related topics, then I invite you to follow my blog.

 

Gravitational Lensing


Gravitational Lensing is the distortion (or bending) of light from distant objects, such as a cluster of galaxies, that is caused by the bending of spacetime around large masses that are between the observer and the object(s) being observed.

Gravitational Lensing is a prediction of Einstein’s General Theory of Relativity and has been confirmed by observations several times since it’s proposal. The first of these observational confirmations of Einstein’s prediction was in 1979 when Dennis Walsh, Robert Carswell and Ray Weyman observed ‘twin’ quasars (QSO 0957+561A/B) that turned out to  be the same quasar distorted by an unseen gravitational lens.

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