Tag Archives: Physics

Is Earth Actually Flat?

By Vsauce via YouTube

Would Headlights Work at Light Speed?

By Vsauce via YouTube

If you were driving at the speed of light and turned on your headlights, what would happen?

Is Earth Actually Flat?

By Vsauce via YouTube

The earth is not flat, it is round, otherwise travelers would be falling off the edge. Right?

Wrong!

Proposed Time Machine Could Also Clone Objects

vortex 911

Access to the past would open all sorts of new possibilities of more than travel.

By Charles Q. Choi, ISNS Contributor via Inside Science

time_250px(ISNS) — Time travel is often a way to change history in science fiction such as “Back to the Future” and “Looper.” Now researchers suggest a certain kind of time machine could also possess another powerful capability — cloning perfect copies of anything.

However, scientists noted the way these findings violate what is currently known about quantum physics might instead mean such time machines are not possible.

We are all time travelers in that we all move forward in time. However, scientists have suggested it might be possible to move back in time by manipulating the fabric of space and time in our cosmos. All mass distorts space-time, causing the experience of gravity, a bit like how a ball sitting on a rubber sheet would make nearby balls on the sheet roll toward it. Physicists have proposed time machines that could bend the fabric of space and time so much that timelines actually turn back on themselves,  forming loops technically known as “closed timelike curves.”

These space-time warps can develop because of wormholes — tunnels that can in theory allow travel anywhere in space and time, or even into another universe. Wormholes are allowed by Einstein’s general theory of relativity, although whether they are practically possible is another matter.

A key limitation of this kind of time machine would be that any traveler using it cannot go back to a time before the device was built. It only permits travel from the future back to any point in time after the machine was constructed.

Scientists have for decades explored what closed timelike curves are capable of if they are possible.

One complication they would encounter is the no-cloning theorem in quantum physics, which basically forbids the creation of identical copies of any particle one does not know everything about to begin with.

wormhole_by_stefitms_250pxIn classical physics, one can generate a perfect copy of anything by finding out every detail about it and arranging the same components in the same order. However, in the bizarre world of quantum physics — the best description so far of how reality behaves on its most fundamental levels — one cannot perfectly measure every detail of an object at once. This is related to Heisenberg’s uncertainty principle, which notes that one can perfectly measure either the position or the momentum of a particle, but not both with unlimited accuracy.

Nearly 25 years ago, theoretical physicist David Deutsch at the University of Oxford in England suggested closed timelike curves might actually violate the no-cloning theorem, allowing perfect copies to be constructed of anything. Now scientists reveal this might be true in findings detailed in the Nov. 8 issue of the journal Physical Review Letters.

To understand this research, imagine one builds a time machine in the year 2000. One could place a letter into the device in the year 3000 and pick it up within this box in 2000 or any year between then and 3000. From the perspective of the letter, it goes inside this time machine into one mouth of a wormhole in the future and comes out the other mouth of the wormhole in the past.

However, theoretical physicist Mark Wilde at Louisiana State University, in Baton Rouge, and his colleagues found this scenario may be more complex than previously thought. Instead of the time machine containing just one wormhole, it could possess many wormholes, each at some point in time between the future and the moment of its creation. A letter entering the box in 3000 might exit from a wormhole in 2999, instantaneously go back into that wormhole and emerge in 2998, and so on.

“It’s like there are 1,000 different particles emerging from all the wormholes, but in fact they’re all the same particle you sent in the beginning,” Wilde said. “You just have all these temporary copies emerging from and going back into these wormholes.”

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Inertial Propulsion and Other Delusions

steven_novellaby via NeuroLogica Blog

Some ideas are so compelling and seductive it seems there will always be those who succumb to their siren song. We easily understand how transformative these technologies will be and can’t help feeling that if we work hard enough, we can achieve them – the panacea, free energy, anti-gravity, and regeneration to name a few.

perpetual motion 7043BFree energy and anti-gravity machines attract engineers and tinkerers who cannot help but think that if they can figure out the proper arrangement of moving parts, they can bypass the laws of physics. Over the decades they have produced often complex and sometimes elegant machines that seem like they might work, but always always they miss something subtle.

The pattern by now is very clear, and depressingly repetitive. The inventor spends years developing a machine to exploit some physical property, such as the interaction of magnets, or the seemingly funny physics of rapidly rotating systems. Their scale models seem to do what they are supposed to – usually they spin. At some point the inventor believes they are ready to show their incipient invention to the world, perhaps now they are ready to attract major investors to help build the full scale operating versions of their technology.

What they present to the world are complex diagrams, and scale models that do something, but never what they are claimed to do. We never see a free energy device actually producing energy and running electrical devices without any outside input or burning of fuel. We never see anti-gravity devices levitating.

Of course, if the inventors could actually produce what they claim, they would garner serious attention. Instead they are largely ignored and criticized – their years, even decades, of loving labor dismissed. How can this be? They must simply be too far ahead of their time for the rubes to understand their genius. Plus, there must be some sinister conspiracy working against them – Big Oil or whatever.

It’s sad – another mind, perhaps even brilliant in their way, lost to the allure of the impossible.

Inertial Propulsion

perpetual motion 702BThere are many phrases that are used to refer to impossible technologies. What seems to happen is that proponents come up with a term for their invention. Their invention is found to be nothing but a fantasy, and the term becomes associated with negative connotations. The next generation of proponents then come up with a new technical term, and the cycle continues.

So perpetual motion machines become free energy machines, then zero-point energy, then over-unity machines, etc.

Last year, January of 2013, an inventor by the name of Rick R. Dobson revealed his “closed loop propulsion” technology – the product of 27 years of development. Closed-loop propulsion is a synonym for inertial propulsion, or massless propulsion. He also calls his technology centrifugal propulsion.

The idea behind such technologies is to produce propulsion without any propellant. Propellant is one of those annoying necessities of physics.

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Quantum Physics: Teleportation and Holograms

Via Stuff They Don’t Want You to Know – YouTube

In countless works of fiction, authors use quantum mechanics to explain things like telepathy, teleportation or the shape of the universe. Why? Tune in to learn more about quantum physics — and why, in some cases, the truth may be stranger than fiction.

Do We Live in the Matrix?

matrix_has_u_600px

Tests could reveal whether we are part of a giant computer simulation — but the real question is if we want to know…

By Zeeya Merali via DiscoverMagazine.com

In the 1999 sci-fi film classic The Matrix, the protagonist, Neo, is stunned to see people defying the laws of physics, running up walls and vanishing suddenly. These superhuman violations of the rules of the universe are possible because, unbeknownst to him, Neo’s consciousness is embedded in the Matrix, a virtual-reality simulation created by sentient machines.

matrix-red_02_250pxThe action really begins when Neo is given a fateful choice: Take the blue pill and return to his oblivious, virtual existence, or take the red pill to learn the truth about the Matrix and find out “how deep the rabbit hole goes.”

Physicists can now offer us the same choice, the ability to test whether we live in our own virtual Matrix, by studying radiation from space. As fanciful as it sounds, some philosophers have long argued that we’re actually more likely to be artificial intelligences trapped in a fake universe than we are organic minds in the “real” one.

But if that were true, the very laws of physics that allow us to devise such reality-checking technology may have little to do with the fundamental rules that govern the meta-universe inhabited by our simulators. To us, these programmers would be gods, able to twist reality on a whim.

So should we say yes to the offer to take the red pill and learn the truth — or are the implications too disturbing?

Worlds in Our Grasp

The first serious attempt to find the truth about our universe came in 2001, when an effort to calculate the resources needed for a universe-size simulation made the prospect seem impossible.

matrix alternate reality_250pxSeth Lloyd, a quantum-mechanical engineer at MIT, estimated the number of “computer operations” our universe has performed since the Big Bang — basically, every event that has ever happened. To repeat them, and generate a perfect facsimile of reality down to the last atom, would take more energy than the universe has.

“The computer would have to be bigger than the universe, and time would tick more slowly in the program than in reality,” says Lloyd. “So why even bother building it?”

But others soon realized that making an imperfect copy of the universe that’s just good enough to fool its inhabitants would take far less computational power. In such a makeshift cosmos, the fine details of the microscopic world and the farthest stars might only be filled in by the programmers on the rare occasions that people study them with scientific equipment. As soon as no one was looking, they’d simply vanish.

In theory, we’d never detect these disappearing features, however, because each time the simulators noticed we were observing them again, they’d sketch them back in.

That realization makes creating virtual universes eerily possible, even for us.

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Magnet People: How Do They Work?

By Kyle Hill via The Committee for Skeptical Inquiry – CSI

. .. never mind that there is no evidence for these gaussy guys and gals, what would the world be like if people really did generate a noticeable or even intense magnetic field?


hill-magnet-people

Strip club patrons would get quite a show, more so than usual, if people really were magnetic.

Amid the dollar bills and drunk-at-noon businessmen, a magnetic stripper, if she spun fast enough around the poll, would melt it. At the very least she would shock herself before shocking the crowd. When a conductor like metal meets a changing magnetic field, the magic of reality induces an electric current in it. Flip-flop this current around enough, and the metal heats up to the point of melting.

If people really were magnetic, they would be terrible navigators. Taking to their smart phones and computers, their screens would blur out and become unusable. Going back to the old methods, a compass wouldn’t help much either. It would be more likely to find you than Earth’s magnetic north.

Barrell MagnetLike all interesting human qualities, magnetic people would have a range of field strengths. Perhaps there would even be schools and universities dedicated to harnessing or improving your output. In any case, the strength of the field matters quite a bit. It’s the difference between being a glorified refrigerator magnet and being able to free fall down a metal tube without dying.

Magnetic people with the strength of refrigerator magnets would produce a field 100 times stronger than the Earth’s. But if any fortunate “Magnetos” existed, perhaps with MRI-like output, they would have one million times the field strength of Earth. For the refrigerator-strength people, you wouldn’t have to change much. But a public warning would have to go out whenever those Magnetos were about. Entire houses, entire cities, would have to be shielded; all metal objects not tied down turn into deadly projectiles. In fact, a rogue oxygen tank once proved this danger, killing a patient during an MRI scan after rocketing across the room, drawn by the monstrous amount of teslas. (You can see the incident re-created here.) And at this strength, you better avoid your friend’s stack of old floppy disks and unshielded hard drives, as you could shuffle their bits into blurry oblivion.

But it wouldn’t be all bad. Magnetic craftsmen would find that every part of their body has become a convenient tool and nail holder. Salmon fishermen could experience a huge boom. As salmon navigate their way home according to the Earth’s magnetic fields, a giant magnet in the form of a fisherman could disorient or even attract the fish. Magnetic lifeguards could take to the ocean as shark repellants.

Lovers might find it annoying however, as there is no telling when your poles, so to speak, would line up.

If people really were magnetic, it would eliminate the need for elevators, at least as a way down. A strong enough magnet can . . .

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3 Simple Ways to Time Travel (& 3 Complicated Ones)

Every now and then i just geek out on science:)

▶ 3 Simple Ways to Time Travel (& 3 Complicated Ones) – YouTube.

Why does the North Pole move?

From the “Almost Too Stupid to Post” file . . .

Almost too stupid_wide_250pxThis post is for all those doomsayers building backyard bunkers in preparation for the day the world comes to an end because of the north and south poles shifting.

Yes, some people fear the day the north and south poles shift their positions or even reverse positions. They believe such a shift in the Earth’s magnetic field will result in earthquakes, tsunamis, global climatic change and eventually the destruction of our planet.

(As a side note: Are there ANY conspiracy theories out there that DON’T end with everybody being annihilated or the planet being destroyed? Just asking. I’m beginning to suspect there is a conspiracy to NOT have any conspiracies with a happy ending. But i digress . . . :))

The following article explains the regularity of pole shifting. Apparently, the poles have only been shifting every hour of everyday for a gazillion years. The north and south poles have even swapped positions 400 times in the last 330,000,000 years.

So open your bunker doors dear doomsdayers, it’s safe to crawl out – – – and don’t forget your compasses.

Mason I. Bilderberg (MIB)

by via HowStuffWorks

Click for larger view.
In the last 150 years, the pole has wandered a total of about 685 miles (1102 kilometers).
Image courtesy Kenai National Wildlife

The Earth has several poles, not just two. It has geographic north and south poles, which are the points that mark the Earth’s axis of rotation. It also has magnetic north and south poles, based on the planet’s magnetic field. When you use a compass, it points to the magnetic north pole, not the geographic North Pole.

The Earth’s magnetic poles move. The magnetic North Pole moves in loops of up to 50 miles (80 km) per day. But its actual location, an average of all these loops, is also moving at around 25 miles a year [ref]. In the last 150 years, the pole has wandered a total of about 685 miles (1102 kilometers). The magnetic South Pole moves in a similar fashion.

The poles can also switch places. Scientists can study when this has happened by examining rocks on the ocean floor that retain traces of the field, similar to a recording on a magnetic tape. The last time the poles switched was 780,000 years ago, and it’s happened about 400 times in 330 million years. Each reversal takes a thousand years or so to complete, and it takes longer for the shift to take effect at the equator than at the poles. The field has weakened about 10% in the last 150 years. Some scientists think this is a sign of a flip in progress.

The Earth’s physical structure is behind all this magnetic shifting. The planet’s inner core is made of solid iron. Surrounding the inner core is a molten outer core. The next layer out, the mantle, is solid but malleable, like plastic. Finally, the layer we see every day is called the crust.

The Earth itself spins on its axis. The inner core spins as well, and it spins at a different rate than the outer core. This creates a dynamo effect, or convections and currents within the core. This is what creates the Earth’s magnetic field — it’s like a giant electromagnet.

MORE . . .

The Philadelphia Experiment

Did the US Navy make an entire ship disappear in a 1943 experiment that went awry?

via inFact: The Philadelphia Experiment – YouTube

Susan Blackmore on Free Will

Susan Blackmore iconI have been a fan of Dr. Susan Blackmore ever since i read her book In Search of the Light: The Adventures of a Parapsychologist.

One of my favorite topics she writes and talks about is her theory that we don’t have free will. I am fascinated by such a counterintuitive idea. Maybe you will be too.

This video is about an hour long, i haven’t finished watching it yet, but i’m sure i will enjoy it if it’s like all her other discussions.

Via YouTube: Susan Blackmore on Free Will

Quantum Quackery

quantum-physics-lecture_600pxQuantum physics is claimed to support the mystical notion that the mind creates reality. However, an objective reality, with no special role for consciousness, human or cosmic, is consistent with all observations.

By Victor Stenger (1997) via Committee for Skeptical Inquiry – CSI

quantum_physicsCertain interpretations of quantum mechanics, the revolutionary theory developed early in the century to account for the anomalous behavior of light and atoms, are being misconstrued so as to imply that only thoughts are real and that the physical universe is the product of a cosmic mind to which the human mind is linked throughout space and time. This interpretation has provided an ostensibly scientific basis for various mind-over-matter claims, from ESP to alternative medicine. “Quantum mysticism” also forms part of the intellectual backdrop for the postmodern assertion that science has no claim on objective reality.

The word “quantum” appears frequently in New Age and modern mystical literature. For example, physician Deepak Chopra (1989) has successfully promoted a notion he calls quantum healing, which suggests we can cure all our ills by the application of sufficient mental power.

Photo courtesy Daniel Johansson

Photo courtesy Daniel Johansson

According to Chopra, this profound conclusion can be drawn from quantum physics, which he says has demonstrated that “the physical world, including our bodies, is a response of the observer. We create our bodies as we create the experience of our world” (Chopra 1993, 5). Chopra also asserts that “beliefs, thoughts, and emotions create the chemical reactions that uphold life in every cell,” and “the world you live in, including the experience of your body, is completely dictated by how you learn to perceive it” (Chopra 1993, 6). Thus illness and aging are an illusion and we can achieve what Chopra calls “ageless body, timeless mind” by the sheer force of consciousness.1

Amit Goswami, in The Self-Aware Universe: How Consciousness Creates the Material World, argues that the existence of paranormal phenomena is supported by quantum mechanics:

. . . psychic phenomena, such as distant viewing and out-of-body experiences, are examples of the nonlocal operation of consciousness . . . . Quantum mechanics undergirds such a theory by providing crucial support for the case of nonlocality of consciousness.

(Goswami 1993, 136)

Since no convincing, reproducible evidence for psychic phenomena has been found, despite 150 years of effort, this is a flimsy basis indeed for quantum consciousness.

MORE . . .

Update: Cloud Anomaly Explained | Ghost Theory

Watch the video below to see the strangest cloud phenomenon you will ever see! Guaranteed.

Then click the link below the video for the explanation from the good people over at Ghost Theory. Cool stuff.

➤➤➤ Cloud Anomaly Explained | Ghost Theory.

Check Out 10 Funny Optical Illusions

via Odd Stuff Magazine

Another post dedicated to optical illusions, many of us interested in this topic. Optical illusions created our mind, which is like the easiest way to look at things. At first glance, we are try to correlate the images with the most basic and intimate interpretation, and only in few seconds, we understand what is in the picture, and we begin to see the individual parts.

Change of perspective – is another common technique: it manipulates our visual perception, making the object larger, smaller, closer or farther away than it actually is. In short, Lets look…

(click any image to begin viewing)

Want to see more? Just can’t get enough? Check Out 30 MORE funny optical illusions at Odd Stuff Magazine!

Free Energy Machines is it True?

Free Energy Machines

Some believe they’ve cracked the secret of free energy forever with no fuel needed. Is it true?

Filed under Conspiracies, Consumer Ripoffs, General Science

Yildiz2 motor

Call them free energy machines, perpetual motion, over-unity machines, or any other name; a tiger remains a tiger no matter what color you paint his stripes. For as long as human beings have needed electricity or any kind of power source, inventive minds have sought in vain for a perfect solution: free energy forever with no fuel needed. Drawings of plans for perpetual motion machines are found throughout history for as long as we’ve had the science of engineering, and they continue to appear today, perhaps more than ever. Today we’re going to look at some of the most famous examples of free energy machines, and address the common public perception that such miracles actually exist.

The reason that no free energy machine can work, or will ever work, should go without saying; but since the claims continue to persist, it bears a mention. A perpetual motion machine would violate the laws of thermodynamics. Strictly speaking, it is unscientific for me to say that no free energy machine will ever work; but the fundamental laws of the universe are established to such a huge degree of certainty that it’s a limb upon which I’m willing to go out. Specifically, the first law of thermodynamics states that the energy of any closed system remains constant. If you take any energy out of it at all — for example, to make a rotor spin — then you must put in at least an equivalent amount of energy. The second law of thermodynamics states that entropy in any isolated system can only increase but not decrease; basically, systems seek thermal equilibrium. This law prohibits any process in which the only result is that heat moves from a region of lower temperature to a region of higher temperature, or where heat is converted purely into work. All free energy concepts are impossible because, by definition, they violate one or both laws.

The most common perpetual motion concept is a magnetic motor, some arrangement of permanent magnets intended to spin a rotor, push a ball around a path, or keep some other component in motion forever. These days they’re usually blended with a powered electric motor, and the inventor claims that once it gets going, its kinetic energy exceeds the electrical energy put into it. An Internet search yields thousands of results for such machines. Many of them show videos of their machines working. So how do we reconcile this: am I saying all these guys are all liars?

http://skeptoid.com/episodes/4341

 

Cases of Time Slips

by via Mysterious Universe

A white Ford pickup pulled up to cattle pasture near Ponca City, Oklahoma, in early Fall 1971, and stopped at a gate. Karl, Mark, and Gordon worked for cattle feed distributor and were sent to this remote area to pick up a feeder. What they found there has kept them silent for 41 years.

“We opened the gate, which was barbed wire with no lock, and entered,” Karl said. “We went on the property, which was covered with grass up to and over the hood of the truck.”

They drove through the tall grass to the tank that sat close to a red barn and got out of the truck.

“We realized the tank was almost half full and too heavy to load,” Karl said. “We decided to leave and drove around the red barn and we saw a large, two story white house, with no lights in front of us.”

The trio drove back to the cattle feed company and the boss said he’d drain the tank and they could pick it up tomorrow.

“We went to the location to retrieve the tank the next night,” Karl said. “This time we decided to go through the old white big house on the hill and brought our shotguns.”

They drove onto the property over the path they’d made through the grass the day before and loaded the tank. Then they pulled around the barn toward the house. What they saw burned into their memories.

“It was no longer there,” Karl said. “We walked up the hill where it stood and there were no signs of demolition, no foundation, nothing at all. What we all seemed to witness the night before was no longer there. We have talked to each other over the years but none of us can begin to explain this vision.”

Did these men witness a slip in time?

Time slips have been reported throughout history. English women vacationing in France in 1901 claimed they stepped into the French Revolution, and two English couples traveling in Spain in the 1970s stayed at an oddly archaic hotel that was simply gone on their return journey.

Physicists like Albert Einstein, Michio Kaku and Stephen Hawking have all said time travel is theoretically possible; our science just can’t achieve it. But what if nature can?

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How can parts of Canada be ‘missing’ gravity?

by via HowStuffWorks

For more than 40 years, scientists have tried to figure out what’s causing large parts of Canada, particularly the Hudson Bay region, to be “missing” gravity. In other words, gravity in the Hudson Bay area and surrounding regions is lower than it is in other parts of the world, a phenomenon first identified in the 1960s when the Earth’s global gravity fields were being charted.

Two theories have been proposed to account for this anomaly. But before we go over them, it’s important to first consider what creates gravity. At a basic level, gravity is proportional to mass. So when the mass of an area is somehow made smaller, gravity is made smaller. Gravity can vary on different parts of the Earth. Although we usually think of it as a ball, the Earth actually bulges at the Equator and gets flatter at the poles due to its rotation. The Earth’s mass is not spread out proportionally, and it can shift position over time. So scientists proposed two theories to explain how the mass of the Hudson Bay area had decreased and contributed to the area’s lower gravity.

Keep Reading: HowStuffWorks “How can parts of Canada be ‘missing’ gravity?”.

What If Everyone JUMPED At Once?

What If Everyone JUMPED At Once? – YouTube.

Firewalk Mishap

by Steven Novella, Jul 23 2012

According to reports, 21 people had to be treated for burns from walking over hot coals at a Tony Robbins inspirational event.

Robbins is a successful self-help guru with a schtick that depends upon the scientific illiteracy of his audience. After a session of telling people how to “unleash the power within” he demonstrates their new-found power by inviting them to walk barefoot over hot burning coals while thinking about cool moss. This is meant to demonstrate the power of mind over matter. This is, of course, nonsense.

The Hot Coal Deception

Many physicists have used the hot coal demonstration to teach a bit of elementary physics, as there is a very simple explanation for how people can walk over hot coals in their bare feet.

Keep Reading: Skepticblog » Firewalk Mishap.

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