חשמל

How a conventional MRI (left) and the home device (right) work

A home MRI scanner may revolutionize medicine

In ten years, it may be possible to find ambulances - or hospitals on wheels - that can reach multi-casualty incidents and provide the doctor in the field with a clear 3D image of each injured person. Doctors will no longer be needed
ruined city Illustration: depositphotos.com

If humans become extinct, what will the earth look like a year later?

What will happen to all our stuff? What will happen to our homes, our schools, our neighborhoods, our cities? Who will feed the dog? Who will cut the grass? Although this is a common theme in movies, shows
Israel is not prepared for the climate crisis. Figure using DALEE-2. Definitions: Avi Blizovsky

The power outages prove what the OECD stated: Israel is lagging behind in taking measures to reduce the climate crisis

According to the organization's report published this week in Israel, 5% use renewable energy sources, if we were closer to 12% - the OECD average, it would be easy to avoid the shame of self-initiated power outages during the day in the country
Prof. Binghai Yan. Unexpected enlightenment. Courtesy of the Weizmann Institute

And let there be light, more light

It started with very strange experimental results, continues in a new physical theory about the behavior of photons, and in the future may improve our smartphone screens and enable faster data communication.
Long high voltage direct current (HVDC) kV in Canada. Source: Tonyglen14.

Return of electrical technology previously pioneered by Thomas Edison

Source: pixabay.

See the night in a new light

The storm's electrical charge can cause headaches and communication disruptions. Photography: Kevin, Flcikr

Israel is electrified

Above: An electric current, behaving like a liquid, creates eddies (the white arrows) whose particles produce heat (in red and orange). Below: when the current operates according to Ohm's law, the heat is generated only around the two electrodes between which the current flows (in red and orange)

Electricity flows in your hands

Do flowers conduct electricity? It's not for nothing: in the future it will be possible to create much more sophisticated plant-electronics interfaces. roses Photo: shutterstock

flower electricity

Step on the heels and turn the urine into electricity. Photo: (c) UWE Bristol

Electricity flows

Italian stamp from 1999 in honor of Alessandro Volta. Photo: Neftali / Shutterstock.com

270th birthday of the inventor of the electric battery Alessandro Volta

The new credit card-sized devices (for prototypes) can interact with each other and alert their users without the use of batteries. They pass information between them by deflecting or swallowing radio signals that already exist in the air around them. [Courtesy of University of Washington]

Wireless communication method without battery

Tazer gun. Photo: shutterstock

The stick and the taser - the technology of the police electric shock device that starred in the news this week

A new spray may turn any object into an electric battery Credit: Rice University

Loaded color / Evelyn Lamb

shock and awe. Nikola Tesla in his Niagara Falls laboratory along with his coils, which could discharge millions of volts and send electricity through the air.

Can electricity in the air kill people?

Alex Hang, a professor of electrical engineering at the University of North Carolina, is reinventing the transformers that currently lower the voltage of electricity routed to neighborhoods so that it is suitable for use in a domestic environment

Smart transformers

Firefighters put out a fire in Canada. From Wikipedia

Extinguishing fires without water - and with a little electricity

Capacitor diagram based on parallel plates

Where did the energy go?

Improved fuel cell. Image: MIT

Significant improvement in fuel cell efficiency

Ocean-Bottom Bacteria

Do sea-floor bacteria make their own electric grids?

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Hans Christian Oersted - the man thanks to whom electronics exists

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

to transmit energy from the sky

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Concentrate the sun's energy to one point

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A Norwegian company will build a mobile offshore wind turbine

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Laser, lightning and the scientists in between

Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A new solar cycle has begun