1 Number Will Soon Reveal If the Speed of Light Used to Be Faster
Scientists produce a value for the cosmic microwave background that will definitely prove or disprove that the speed of light used to be higher.
According to Einstein’s theory of relativity, the speed of light in a vacuum and gravity are the same. This is nice and orthogonal, but if the universe began with a hot big bang 13.77 billion years ago give or take .059 billion years, there’s a problem scientists have been struggling to explain. If light particles and gravity waves travel at the same speed, there simply hasn’t been enough time for the universe to become as evenly heated as it seems to be. Light — and thus, energy and heat — just doesn’t travel fast enough to have reached across its entire radius in roughly 14 billion years. The prevailing explanation is the “inflation theory” in which the universe at first expanded slowly enough for it to reach a uniform temperature, and then picked up speed to reach its current estimated radius of 46 billion light years across. However, many feel that inflation is an idea lacking in evidence or a logical mechanism. Another idea is that the speed of light used to be faster, and now a team of scientists have come up with something unique in this field: A way to definitively test a theory.
The issue the ideas are attempting to address is called the “horizon problem.” If you could see to the farthest star (we can’t actually see nearly that far with the naked eye) on your left, it would be 14 billion light years away, or 14 billion years in the past. At your far right would be another 14-billion-year-old star. Scientists would say that both stars are in “causal contact” with us because their light has reached us, and causal contact is something that’s required for energy/heat to be exchanged.
Night sky (RYAN HALLOCK)
On the other hand, the distance between our far left and far right stars would be 28 billion light years, and that means two people standing on those stars wouldn’t be able to see each other yet because it would take 28 billion years for light to travel between them and the universe is only 14 billion years old. These stars are not in causal contact, and thus no energy/heat has yet had time to travel between them. So why does the spectral index, a reading of the cosmic microwave background (CMB) — a snapshot of the oldest light in the universe — show the same temperature everywhere?
One of the people who first put forward the idea that the speed of light might have been faster at some point and thus able to overtake the outward expansion of matter was João Magueijo from Imperial College London. He’s now developed, along with Niayesh Afshordi at the Perimeter Institute in Canada, a model that predicts a very specific spectral index value that would confirm the speed of light used to be higher: 0.96478. Current readings of the CMB are not that far off — 0.968 — and they’re getting more precise all the time. It’s Magueijo’s hope that in the near future, the Planck satellite measuring the CMB will either match the model’s prediction, proving the theory, or definitively contradict it, thus ruling it out.
Magueijo tells New Scientist, “That would be great — I won’t have to think about these theories again. This whole class of theories in which the speed of light varies with respect to the speed of gravity will be ruled out."
You might expect Magueijo to be pulling for his theory to be confirmed, but really, he’s just hoping for one irrefutable answer in a field that’s made up almost entirely of so-far unprovable theories. Which is to say, he’s just looking for some plain-old truth.
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Is the Magnetic Field Reversing?<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="e3e0b16dac3b05dab808a4ddf04d198b"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/51usJ74pPP8?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span>
Would you ever have sex with a robot?
- In 2016, "Harmony", the world's first AI sex robot was designed by a tech firm called Realbotix.
- According to 2020 survey data, more than one in five Americans (22 percent) say they would consider having sex with a robot. This is an increase from a survey conducted in 2017.
- Robots (and robotic tech) already play a vital role in speeding up manufacturing, packaging, and processing across various industries.
From homemade dildos to Harmony, the AI sex robot<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="3f7451615568e74c6a839f04329c9902"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/-cN8sJz50Ng?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p><em>"...amid an economic crisis, with restaurants and retailers closing their doors and larger companies laying off and furloughing employees, the sex tech industry is booming."</em><br></p><p>A Bustle <a href="https://www.bustle.com/wellness/the-sex-tech-industry-is-booming-amid-economic-crisis-22819801" target="_blank" rel="noopener noreferrer">article</a> published in April 2020, weeks after COVID-19 was declared a pandemic, explored the drastic boost in the sex tech industry. According to the research, <a href="https://www.dameproducts.com/" target="_blank" rel="noopener noreferrer">Dame Products</a> (a popular sex toy retailer) experienced a 30 percent increase in sales between the months of February to April, and popular sexual wellness brand <a href="https://unboundbabes.com/?utm_source=%7Bsource%7D&utm_medium=%7Bmedium%7D&utm_keyword=unbound%20babes&utm_matchtype=e&device=c&utm_campaign=%7Bcampaign%7D&utm_adgroup=%7Badgroup%7D&gclid=CjwKCAjw1v_0BRAkEiwALFkj5qYbdEwANUjCdRkCeVZ2HZzHjcGmpYbsOXYcMcNneLc2nySvrbaalBoChEsQAvD_BwE" target="_blank" rel="noopener noreferrer">Unbound</a> reported selling twice as many toys as normal in this period.</p><p>While the new coronavirus was crashing the economy in other ways, the sex tech industry was one of the few that actually saw improvements, likely due to people all over the world being advised, encouraged, and in some instances forced to stay at home.</p><p>Something similar happened in 2008, <a href="https://www.villagevoice.com/2010/08/23/the-great-recession-is-a-turn-on-for-the-sex-toy-industry/" target="_blank" rel="noopener noreferrer">during the recession</a>: the sex toy industry was one of the only industries at the time that didn't gravely suffer. </p><p><strong>The evolution of sex tech from stone dildos to artificial intelligence.</strong></p><p><a href="https://sofiagray.com/what-is-the-history-of-sex-toys-from-stone-to-silicone-and-beyond/" target="_blank" rel="noopener noreferrer">The history of sex toys</a> is quite interesting. A 28,000-year-old siltstone dildo was uncovered in Germany in 2005. Luxury bronze dildos have also been found in China that are at least 2,000 years old.</p><p>Aside from various materials being shaped into dildos, there has always been an interest in how to advance sex technology, even before it involved actual technology at all.</p><ul><li>The 1700s: Steam-powered vibrators (such as the Manipulator).</li><li>The 1800s—1900s: The invention of the first electric vibrator (the Pulsoson) and "beauty tools" being used for sexual satisfaction (such as the Polar Cub massager)</li><li>The 1920s—1940s: The introduction of hand-held massagers (the Andis Vibrator) and compact devices (such as the Oster Stim-U-Lax)</li><li>The 1940s—1960s: Japan introduced the "Cadillac of Vibrators" (The Hitachi Magic Wand), which eventually made it's way to America.</li><li>1965: The invention of silicone, which most modern sex toys are made of.</li><li>The 1980s—1990s: The invention of the rabbit-style vibrator, made more popular with one of the first showings of a sex toy on television ("Sex and the City"). </li><li>The 2000s: Visual porn website Pornhub launched and sex toys became increasingly popular. Erotic literature also became more common and popular, with "50 Shades of Grey" and others like it. </li><li>The 2010s and beyond: Sex toys and technology start to blend, and the world's first internet-controlled sex toy was launched in 2010 by Lovense.</li></ul><p>In 2016, "Harmony", <a href="https://www.youtube.com/watch?v=-cN8sJz50Ng" target="_blank" rel="noopener noreferrer">the world's first AI sex robot</a> was designed by a tech firm called Realbotix. </p>
From television shows to real-life applications, artificial intelligence (AI) is becoming more and more popular in all areas of human life.
Credit: Willyam Bradberry on Shutterstock<p>In 2020, more than one in five Americans (22 percent) say they would consider having sex with a robot. <a href="https://today.yougov.com/topics/science/articles-reports/2020/03/19/2020-both-men-and-women-are-more-likely-consider-h" target="_blank" rel="noopener noreferrer">YouGov conducted a study</a> in February 2020 that compared results from a similar study from 2017.<br></p><p>According to the results, 6 percent more people in 2020 are comfortable with the idea of having sex with a robot than in 2017.</p><p>YouGov points out that the increase in consideration is particularly significant among American adults between the ages of 18-34 years old. Additionally, how people feel about having sex with a robot has also changed. In 2020, 27 percent of Americans said they would consider it cheating if they had a partner who had sex with a robot during the relationship, compared to the 32 percent reported in 2017.</p><p><strong>"If you had a partner who had sex with a robot, would you consider it cheating?"</strong></p><p>The results from this interesting study also reveal that many people (42 percent) believe having sex with a robot is safer than having sex with a human stranger.</p><p>Robots (and robotic tech) already play a vital role in speeding up manufacturing, packaging, and processing across various industries. From television shows to real-life applications, artificial intelligence is becoming more and more popular in all areas of human life.</p><p>According to YouGov, "a <a href="https://www.bloomberg.com/news/articles/2019-07-12/amazon-plans-high-end-echo-ramps-up-work-on-alexa-home-robot" target="_blank">Bloomberg</a> report outlining Amazon's plans for an Alexa-powered robot that follows and helps you around the home may redefine how these machines service humans in the near future." </p>
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