Silver discolours and darkens when it is exposed to sulfur-containing gases such as hydrogen sulfide. This change results from a corrosion process called tarnishing which produces silver sulfide.

In a ground-breaking revelation, Harvard astrophysicist and aerospace engineer Dr Willie Soon, has claimed that a mathematical formula could be the ultimate proof of God’s existence. The renowned ...

Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China ...

Gold has been soaring all year, while silver has spent the past nine months languishing, leaving long-suffering investors wondering: Will silver always play second fiddle to gold, or is it finally ...

It is a fabulous time to be a gold bug. Not long ago, outing yourself as one was a good way of getting people to back away from you at an investment conference. The popular image was of someone in ...

Kyle Diamantas, a former corporate lawyer, is the new director for the F.D.A. food division, which oversees infant formula. He defended a top maker in cases claiming the company had not warned of ...

He further added, "We learned from Einstein that Maxwell's equations were relativistic (i.e., invariant under Lorentz transformation) 40 years before relativity.

Theoretical physicists have proposed a potential solution to one of the most puzzling problems in modern physics: the black hole singularity paradox. By modifying Einstein's theory of general ...