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Jul 27, 2023

July 1816: Fresnel’s Evidence for the Wave Theory of Light

Posted by in categories: education, engineering, mathematics, particle physics

Until the early 20th century, the question of whether light is a particle or a wave had divided scientists for centuries. Isaac Newton held the former stance and advocated for his “corpuscular” theory. But by the early 19th century, the wave theory was making a comeback, thanks in part to the work of a French civil engineer named Augustin-Jean Fresnel.

Born in 1,788 to an architect, the young Fresnel had a strict religious upbringing, since his parents were Jansenists — a radical sect of the Catholic Church that embraced predestination. Initially he was home-schooled, and did not show early academic promise; he could barely read by the time he was eight. Part of this may have been due to all the political upheaval in France at the time. Fresnel was just one year old when revolutionaries stormed the Bastille in 1,789, and five when the Reign of Terror began.

Eventually the family settled in a small village north of Caen, and when Fresnel was 12, he was enrolled in a formal school. That is where he discovered science and mathematics. He excelled at both, so much so that he decided to study engineering, first at the École Polytechnique in Paris, and then at the École Nacionale des Ponts et Chaussées.

Jul 27, 2023

Dropships & Drop Pods

Posted by in category: futurism

The ability to get a strike force anywhere and fast is of vast strategic value, and the future may dropships landing anywhere on a planet within minutes.

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Jul 27, 2023

Why the Big Bang might not have been the beginning of our Universe

Posted by in categories: cosmology, physics

The Big Bang marks the birth of the Universe, right? The physicists brave enough to look beyond it aren’t so sure.

Jul 27, 2023

When and where will Europe’s Aeolus wind satellite fall to Earth this week?

Posted by in category: satellites

A European satellite is making a first-of-its kind return to Earth this week.

The European Space Agency (ESA) is currently guiding its Aeolus wind-studying satellite down for a controlled destruction in Earth’s atmosphere. This strategy is a major shift for Aeolus, whose original end-of-life plan called for an unguided fall.

Jul 27, 2023

OSIRIS-REx Mission: UArizona scientists get ready for return samples from asteroid Bennu

Posted by in categories: futurism, space

Scientists at the University of Arizona are counting down the days until a space probe carrying samples from an asteroid is back on Earth. FOX 10’s Steve Nielsen has more on the OSIRIS-REx mission, and why the samples are so important for researchers.

Of the 250 grams of samples, NASA officials will keep 75% of the samples in storage for future generations, whom might discover ways to test the rocks in ways we can’t even comprehend.

The secrets the samples hold could be endless.

Jul 27, 2023

Aditya L1: India’s first space-based mission to study Sun

Posted by in category: space

Aditya L1 is India’s first space-based mission to study the Sun, which is scheduled to be launched in 2023. The spacecraft is named after Aditya, the Hindu god of the Sun. Indian Space Research Organisation (ISRO) aims to place Aditya L1 in a halo orbit around the Sun-Earth L1 Lagrange point, which is about 1.5 million kilometres from Earth.

The mission’s primary objective is to study the Sun’s corona, which is the corona is a very hot and dynamic region. Aditya L1 will carry a number of instruments to study the corona, including a coronagraph, a spectrometer, and an imager.

Jul 27, 2023

Radiation-Free Imaging Technique Takes a Peek Inside Humans

Posted by in category: physics

Physicists have succeeded in making a new imaging technique ready for use on humans where radioactive markers and radiation are not necessary.

Jul 27, 2023

Want to Live Longer and Healthier? Peter Attia Has a Plan

Posted by in categories: biotech/medical, life extension

The doctor, podcast host and author of the bestseller “Outlive” says medicine needs to rethink longevity.

Jul 27, 2023

Colorful new stars shine in latest Webb telescope image

Posted by in category: space

A pair of rambunctious young stars takes center stage in a new near-infrared image taken by the James Webb Space Telescope.

Video above: Webb Telescope image reveals ethereal forms emerging from pillars Of creation.

Jul 27, 2023

Astronomers reveal new features of galactic black holes

Posted by in categories: cosmology, materials

Black holes are the most mysterious objects in the universe, with features that sound like they come straight from a sci-fi movie.

Stellar-mass with masses of roughly 10 suns, for example, reveal their existence by eating materials from their companion stars. And in some instances, accumulate at the center of some galaxies to form bright compact regions known as quasars with masses equal to millions to billions of our sun. A subset of accreting stellar-mass that can launch jets of highly magnetized plasma are called microquasars.

An international team of scientists, including UNLV astrophysicist Bing Zhang, reports in Nature on a dedicated observational campaign on the galactic microquasar dubbed GRS 1915+105. The team revealed features of a microquasar system that have never before been seen.