Einstein’s special relativity, which he formulated in his “miracle year” of 1905, was a theory that revolutionised our ideas of space and time – and ultimately paved the way for some even bigger ...

Tachyons are hypothetical particles that travel at speeds greater than the speed of light. These superluminal particles, are the "enfant terrible" of modern physics. Until recently, they were ...

Two years ago I pointed out 1 what appears to be an inconsistency in the kinematical part of Einstein's special theory of relativity. I repeated this in a slightly different form in a volume published ...

The ticktock of two ultraprecise clocks has proven Einstein right, once again. A pair of atomic clocks made of single ions of ytterbium kept pace with one another over six months, scientists report ...

An illustration conveying the idea of a space-based quantum internet, which would seem, like the hypothetical particle of a tachyon, to outpace light. An illustration ...

The idea was first hypothesized about 70 years ago. In a bizarre repercussion of Albert Einstein's Special Theory of Relativity, objects traveling close to the speed of light appear flipped over. The ...

When I was in graduate school an eon ago, I was forced to take a sequence of advanced courses in research methods and statistics. These classes were heavy on math and statistical theory. I’d earned my ...

Susskind and Friedman follow their collaboration on Quantum Mechanics by probing the mathematical nitty-gritty of field theory and Einstein’s theory of special relativity in the third installment of ...

The identification technique used by Alikhani and colleagues is an application of a concept known as a zero-knowledge proof 2. Imagine that Alice wants to convince her friend Bob that she knows how to ...

Valerio Faraoni receives funding from the Natural Sciences and Engineering Research Council of Canada. Andrea Giusti received funding from the European Union's Horizon 2020 research and innovation ...

Einstein’s general theory of relativity can be summed up in just 12 words: “Space-time tells matter how to move; matter tells space-time how to curve”. But this short description from the physicist ...