The ‘X17’ particle: Scientists may have discovered the fifth force of nature

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A new paper suggests that the mysterious X17 subatomic particle is indicative of a fifth force of nature.

Physicists have long known of four fundamental forces of nature: gravity, electromagnetism, the strong nuclear force, and the weak nuclear force. 

Now, they might have evidence of a fifth force. 

The discovery of a fifth force of nature could help explain the mystery of dark matter, which is proposed to make up around 85 percent of the universe’s mass. It could also pave the way for a unified fifth force theory, one that joins together electromagnetic, strong and weak nuclear forces as “manifestations of one grander, more fundamental force,” as theoretical physicist Jonathan Feng put it in 2016.

The new findings build upon a study published in 2016 that offered the first hint of a fifth force.

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Aqua-Fi: Underwater WiFi developed using LEDs and lasers

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Aquatic internet that sends data through light beams could enable divers to instantly transmit footage from under the sea to the surface.

The internet is an indispensable communication tool, connecting tens of billions of devices worldwide, and yet we struggle to connect to the web from under water. “People from both academia and industry want to monitor and explore underwater environments in detail,” explains the first author, Basem Shihada. Wireless internet under the sea would enable divers to talk without hand signals and send live data to the surface.

Underwater communication is possible with radio, acoustic and visible light signals. However, radio can only carry data over short distances, while acoustic signals support long distances, but with a very limited data rate. Visible light can travel far and carry lots of data, but the narrow light beams require a clear line of sight between the transmitters and receivers.

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Filmada por primera vez la observación cuántica

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La naturaleza duda antes de que el gato de Schrödinger aparezca vivo a muerto.

Los científicos han filmado lo que pasa cuando un observador se asoma al mundo cuántico: las dos probabilidades superpuestas dudan en el momento de elegir entre la vida y la muerte del gato, antes de que Schrödinger abra la caja.

Ion de estroncio atrapado en un campo eléctrico. La medición en el ion dura solo una millonésima de segundo… ¡y ha sido filmada! Crédito: F. Pokorny et al.
Un equipo de investigadores de Suecia, Alemania y España (Universidad de Sevilla) ha conseguido por primera vez filmar lo que pasa cuando un observador se asoma al mundo cuántico.

Es como decir, metafóricamente, que una cámara ha grabado el momento en el que Schrödinger destapa la caja y encuentra al gato vivo o muerto.

Según un ejemplo imaginado por el físico Erwin Schrödinger en 1935, si tenemos un gato dentro de una caja en la que hay alimento y veneno, el dueño del gato es el que decide su suerte al abrir la caja: estará vivo o muerto según lo que el observador quiera encontrar.

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The Kinetic energy form a single raindrop can enlight 100 small led bulbs

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A single raindrop can now power 100 small LED light bulbs, effectively setting a new milestone for energy-harvesting technologies, scientists have reported.

The droplet-based electricity generator has a high energy-conversion efficiency and power density thousand times bigger than its counterparts.

The developers hope the tech will help to tackle the world energy crisis by providing new ways of making use of the environmental energy around us in water and rain.

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