The phase and the group velocity of light propagating in conventional optical media cannot exceed the speed of light in vacuum. However, in so-called epsilon-near-zero (ENZ) materials, light exhibits ...

Electric sparks are used for welding, powering electronics, killing germs or for igniting the fuel in some car engines. Despite their usefulness, they are hard to control in open space, they split ...

Researchers at the Ernst Strüngmann Institute in Frankfurt am Main, Germany, led by Wolf Singer, have made a new discovery in ...

Optical rectennas enhance solar energy conversion, utilizing advanced diodes for efficient energy harvesting, crucial for the ...

The study confirmed that chorus waves arise from interactions with electrons. MMS recorded these waves on 10 August 2019, 26 ...

NASA detects mysterious 'chirping' signals, or chorus waves, 165,000 km from Earth, revealing surprising energy transfer in ...

These short electromagnetic pulses resemble birdsong. However, they pose a significant threat to the functioning of ...

These short electromagnetic pulses resemble bird songs; however, they pose a significant threat to the functioning of ...

NASA's Magnetospheric Multiscale satellites have observed bird-like chorus waves in the Earth's mid-tail neutral sheet, ...

NASA's MMS mission discovered whistler-mode chorus waves in an unexpected region, the terrestrial mid-tail neutral sheet, ...

Scientists found what sounded like chirping-like noises in space, over 62,000 miles (100,000 kilometers) from Earth.

An international team of astronomers has detected mysterious chirping signals in an unexpected region of space, raising major ...