True. Q: Why does the leading digit 1 appear more often than other digits in all sorts of numbers? Q: Why are determinants defined the weird way they are? Q: If accelerating charges radiate, and everything is full of charges, then why don’t I radiate every time I move? Q: Why does it take thousands of years for light to escape the Sun? Q: Does the 2nd law of thermodynamics imply that everything must eventually die, regardless of the ultimate fate of the universe? “Infinite mass” is exactly what it sounds like it is: a mathematical error. However, our experience with photons on Earth cannot compare to a photon strike on our photon counting machine when the photons are emitting from the Sun at the time of our real-time experiment. Q: Why does gravity pull things toward the center of mass? You can think of it as a particle of "pure energy" if it helps you make sense of it, but the only sense in which that is valid is that a photon has energy but no mass. If so, light has no mass. What’s uncertain in the uncertainty principle? Q: How does the Oberth Effect work, and where does the extra energy come from? The point is: light and ordinary matter are very different, and the laws that govern them are just as different. Light is composed of photons, so we could ask if the photon has mass. Q: If a man hangs on an un-insulated wire using both his hands what will happen and why? I am non-educated shlup,but have semi-figured out some questions including why a photon has energy without having mass,and if it ever runs out of energy or stops ? Q: How plausible is it that the laws of physics may actually function differently in other parts of the universe? Matter and energy are often found together. Q: Why does kinetic energy increase as velocity squared? Q: If quantum mechanics says everything is random, then how can it also be the most accurate theory ever? The light is in the X-radiation part of the spectrum based on the energy of the electron beam. Q: Why is a negative times a negative positive? Q: Could the “proton torpedoes” in Star Wars be a thing? (Dealing with fractions). Q: What are fractional dimensions? Q: Why isn’t the shortest day of the year also the day with the earliest sunset? Q: What’s the difference between black holes and worm holes? And the Bible is a book of myths. and momentum= mass * velocity Q: Is it possible for an atomic orbital to exist beyond the s, p, f and d orbitals they taught about in school? What is the explanation for this? If you accept E=MC2 then as a particle matter approaches the speed of light it is converted into energy the original mass being spread out infinitely as it is converted into energy. Then you get: E=mc2 (awesome)! Why? Try to contain your disappointment. Are they discovered or invented/created by humans? These details, if currently understood by science, are very interesting to me. Q: If the Sun pulls things directly toward it, then why does everything move in circles around it? All the carefully worded and painstaking posts myself and others made to clearly explain the nature of light and it didn’t make a dent. How close are we to actually building one and going faster than light? Q: Is it possible to choose an item from an infinite set of items such that each one has an equal chance of being selected? The crucial point is that while light doesn't accelerate, and doesn't have mass, it does carry momentum and momentum, as a form of energy, can be transferred. Mass–energy equivalence states that all objects having mass, or massive objects, have a corresponding intrinsic energy, even when they are stationary. Conservation of momentum applies regardless of where the momentum came from. If they do, is the future determined and what does that mean for quantum randomness? we’re wearing Sun-resistant suits so as not to be named Icarus) then the photons emitted from the Sun, an object larger than a controlled X-ray machine, we will sense the photon emission is the form of a mass-bearing force. Forty-one communities have established MLPs that serve all or part of 50 municipalities for electric service. Q: If you flip a coin forever, are you guaranteed to eventually flip an equal number of heads and tails? Except for the fact that is not at all what happens or could have happened. Of course a discussion on light can never be limited to a general sense. Q: If atoms are mostly made up of empty space, why do things feel solid? The fact that light carries momentum is also verified by experiment. Q: If you could see through the Earth, how big would Australia look from the other side? Matter can be converted into energy, and vice versa. Yes, but it's really a small effect. Q: Is it likely that there are atoms in my body that have traveled from the other side of the planet, solar system, galaxy, or universe? Q: Why does “curved space-time” cause gravity? Does stuff get spread thinner and thinner with each split? Q: Is the final step in evolution an ascension into an energy-based lifeform? Q: Are the brain and consciousness quantum mechanical in nature? Q: If you zoom in far enough, what do particles look like? Say it's a visble photon, you get about 4*10-33 gm extra weight. What’s the deal with this orders of operation business? Q: How do lenses that concentrate light not violate the second law of thermodynamics? Q: Why are scientists looking for life in space by looking for water? ] Matter (no matter how you define it — and there are different definitions in different contexts) is a class of objects that you will find in the universe, while mass and energy are not objects; they are properties that every object in the universe can have. Q: If gravity suddenly increased would airplanes fall out of the sky, or would it compress the air in such a way that airplanes could keep flying? Q: What are “actual pictures” of atoms actually pictures of? They’re not special. It makes for an interesting discussion. Ross, I too have had a 50-year career. The mass of the matter that was infinitely spread out was concentrated also. Were scientists sitting around a room and one scientist caved to another scientist’s claim of mass-bearing photons or was it taken to a majority-rules vote?? Movement creates kinetic energy which makes a photon something rather than nothing. Q: Could Kurt Vonnegut’s “Ice-9 catastrophe” happen? Do primes follow a pattern? These particles, too, carry certain amounts of energy… Q: How do I encrypt/hide/protect my email? Q: Is it possible to parachute to Earth from orbit? If the Earth was flat and had infinite area, would that change the answer? Q: What would happen if everyone in the world jumped at the same time? A journey into the foundations of math. Q: Would it be possible in the distant future to directly convert matter into energy? Light has mass. Q: Why do wet stones look darker, more colorful, and polished? Q: Will black holes ever release their energy and will we be able to tell what had gone into them? Did you know that light exerts pressure on objects? Q: How far away is the edge of the universe? Matter has mass and occupies volume. Q: What would happen if there was a giant straw connecting the Earth’s atmosphere right above the ground to space? Q: Why does wind make you colder, but re-entry makes you hotter? Think of matter as energy that is organized in a particular way. Heat, light, and other forms of electromagnetic energy do not have measurable mass and can't be contained in a volume. Understand instead of fight. Q: Does an electric field have mass? Is there an orbit where the effects cancel out? Q: Do you need faith to believe in science? The simple truth is that we can see and feel the energy of light. But if we stood directly at the Sun, we would experience many types of photon emissions so selecting only the X-ray photons by their wavelength compared to the wavelengths of other photons, wouldn’t we then observe mass-bearing photons as the amount of radiation has been ramped up by our journey to the Sun, our proximity to the Sun? I heard this (=half the observed amount) several times but could you show how to calculate the amount of light bent by "the sun" according to If we find enough digits, isn’t it possible that it will eventually start repeating? However, light does have energy. So light has mass on the basis of Newton's gravitational law . Q: Is it possible to write a big number using a small number? Video: What your Spiritual Guru Never Told you about Quantum Mechanics. Q: Are shadows 2-dimensional? Q: How do you answer a question scientifically? And we’ll need reflective clothing. Q: What is a “measurement” in quantum mechanics? This lets the rest mass. Q: When something falls on your foot, how much force is involved? Q: Is there a number set that is “above” complex numbers? Q: Is it possible to say if the Earth is moving or sitting still without going into space? Q: Why is it that (if you exclude 2 & 3) the difference between the squares of any two prime numbers is divisible by 12? m2=0=mass of light Q: How likely is it that there’s dark matter in me right now? If we can’t get exact solutions, then how do we know when our approximate solutions are any good? Of all the things we can actually see (directly), we say light is the only one that doesn't have mass. Q: How many mathematicians/physicists does it take to screw in a light bulb? Q: How can carbon dating work on things that were never alive? the normal distribution / bell curve)?? So now you get it. Gravity doesn't attract mass, but indeed attracts energy and momentum which light certainly has (and regular matter too) E=γmc² p=γmv. Q: What is the probability that two randomly chosen people will have been born on the same day? Q: Does anti-matter really move backward through time? So we know photons have energy and travel at light speed, and they have momentum AND they are assigned a mass “of sorts” for the purpose of mathematical calculations. What is its relevance? Q: If you were on the inside of the Sun falling in, the matter closer to the surface doesn’t affect your acceleration, but the matter closer to the core does. Q: If time is relative, then how can we talk about how old the universe is? I think my theory is sound because photons have the energy/momentum qualities at the least, in their favor. 1)Newtonian physics Doesn’t one have to be faster? They are more “energetic”. Why Does Light (photons) Feel The Effects of Gravity When It Has No Mass? Is astrology reasonable or plausable? Light sails use the momentum of photons to provide propulsion for space flights. Even classical electromagnetism, as in Maxwell's equations, required that light have momentum. Q: How is matter created? You do realize that photons have been assigned a mass by physicists? Q: Is there some way to actually play quidditch? this simple logic also matches with broglie's law Q: How accurately do we need to know π? Q: If energy is neither created nor destroyed, what happens to the energy within our bodies and brains when we die? Light has Energy. So, light has no rest mass, but it does have momentum and energy-- it can be measured by sensitive balances or by the diameter of stars! Q: How many times do you need to roll dice before you know they’re loaded? Notice that you can never have zero momentum, since something with zero mass and zero energy isn’t something, it’s nothing. Q: If the universe is expanding and all the galaxies are moving away from one another, how is it possible for galaxies to collide? Even before it was known that light is composed of photons, it was known Since gravity is unlimited, can we use it as an infinite energy source? Notify me of follow-up comments by email. How is it used in Mathematics? Q: What are singularities? Again! Q: Is the quantum zeno effect a real thing? Q: Could dark matter actually be the “gravitational shadow” of parallel universes? Q: Why haven’t we discovered Earth-like planets yet? but not why,or how that’s possible,and last,if the universe is expanding,will it so,or when energy runs out ,will it start to contract faster+ faster,+ end up in a Big Bang + a new start ? Q: Can free will exist in our deterministic universe? The light is traveling at speed c. Say that the gravitational field. Seek first to understand, then when you have a clear understanding of all the current information on a subject, hypothesize away! Q: How can electrons “jump” between places without covering the intervening distance? Mathematical proof of the existence of God. Q: The information contained in a big system isn’t the same as the amount of information in its parts. Q: Who would win in a fight: Gödel or Feynman? It's been measured in countless experiments. Q: How close is Jupiter to being a star? Learn something. Q: Before you open the box, isn’t Schrödinger’s cat alive or dead, not alive and dead? Thanks again. Your belief is based on something you thought of in your head that you want to be correct or at least remain disprovable (to you, it already has been to anyone who understands and accepts experiments proving the massless nature of light. Q: Should we be worried about artificial intelligence? Q: Is there an equation that determines whether a question gets answered on ask a mathematician/physicist? BTW I am 84 Y/O 8th grade education and not much of that Q: How did mathematicians calculate trig functions and numbers like pi before calculators? Photons do not have rest mass like matter. Q: Is there a formula for finding primes? I read your statement about how light has momentum despite the fact that it has no mass. Q: What would happen if a black hole passed through our solar system? What happens at the “edge”? Q: Why do superconductors have to be cold? Q: What is the probability that in a group of 31 people, none of them have birthdays in February or August? Q: If the world is a giant magnet, how come we can’t build a repelling magnet that can float? Because all photons are equal in terms of having no rest mass. Q: What happens when you fall into a blackhole? Why is it that one random thing is unpredictable, but many random things together are predictable? What are we even looking at? Would love to see the nova event done on a virtual scale to test this theory of a mass-bearing photon emission as one of a nova’s products. Q: Given two points on the globe, how do you figure out the direction and distance to each other? Q: If all matter originated from a single point, does that mean all matter is entangled? Video: How do we know that 1+1=2? Shouldn’t the light have already passed us? Does it take energy to move an electric field? Both have a tiny hole on a side wall. Q: Why are many galaxies, our solar system, and Saturn’s rings all flat? This might explain how the matter in the universe arose from the Big Bang. Like mass traveling at light speed. Q: What would Earth be like if it didn’t turn? Q: Is it odd that the universe’s constants are all so perfectly conducive to life? I’m told, (o.k., I’ve read), that the quantity of mass assigned to the humble but brilliant photon is for the purpose of mathematical equations. Why is it so important? Q: Why doesn’t life and evolution violate the second law of thermodynamics? Photons are energy particles. A Quantum Computation Course 4: Full Measure, A Quantum Computation Course 3: Rise of the Quanta, A Quantum Computation Course 2: Quantum Harder. The frequency of a wave’s oscillation is a measure of more kinetic movement… not only is it moving at light speed-it is vibrating up and down as it does it, creating more kinetic energy-Again, the only energy it has. Q: How do we know that everyone has a common anecestor? Q: Why is the area of a circle equal to πR. Maybe we can take a Geiger counter? Here’s another perspective: I originally became interested in photons when I was taking a class on X-rays (diagnostic, not therapeutic).. Why? So why all the neigh saying about mass-bearing photons? Q: Why are the days still longer than nights, until a few days after the fall equinox? (adding digits and tricks with nines). Q: After the heat death of the universe will anything ever happen again? This is how they can push things around, they transfer momentum. if massless particles are “doomed” to travel the speed of light. In any other instance can energy ever be destroyed or created? We experience pure photons on our skin all day long on Earth and photon detectors register them the same way as “manufactured” photons. That's why light is affected by gravity. Well, knowing from Einstien's studies that this equating was build basing on m=0 (where m is a mass of the photon, particle of light) I can clearly see a paradox in it. Hopefully these kinds of questions don’t require calculus. Q: How does “1+2+3+4+5+… = -1/12” make any sense? Q: What is “spin” in particle physics? Don’t living things reverse entropy? Q: What role does Dark Matter play in the behavior of things inside the solar system? I think it was Einstine who proved that no mass can travel at the speed of light.As any object of any arbitrary mass when approximates the speed of light increases in mass.When it reaches the vecinity of speed of light its mass is so enormous that it requires infinite amount of energy to propel it.If this is indeed true, then light can have no mass as it could not travel in at the speed at 3*10^8km/sec.Am I correct? Q: What would the universe be like with additional temporal dimensions? Q: What’s it like when you travel at the speed of light? Hmm…..”When a photon hits a charged particle…” My first thought is an X-ray beam but we all know that simple, diagnostic X-rays are not felt. Q: Since the real-world does all kinds of crazy calculations in no time, can we use physics to calculate stuff? Q: Since all particles display wave-like characteristics, does that imply that one could use destructive wave interference to destroy or at least drastically change a particle? If so, then did time begin in that universe at the inception of the black hole? We would be wearing out super-photon protective goggles and notice that the photons appear to be coming directly at us (like with snow when you’re driving) . He figured out that the energy of a photon is related to it’s frequency (E=hf), but why are photons so special? Couldn’t they “prove” anything they want? Q: Would it be possible for humans to terraform mars? Q: If you stood in the beam of a particle accelerator, what would happen? During the very early part of this energy boost, the electrons are in the speed range covered by Newtonian physics, and most of their And matter must be solid, liquid or gaseous but light is vibrating energy with no mass And you can think matter can be destroyed but you can't destroy light which is energy. Do they exist in nature? Q: How much of physics can be deduced from previous equations/axioms? Q: What is energy? Is there a limit to how much information can be compressed? Why do phonons and photons have such similar names? i just have a question that, as in quantum physic theory, light has momentum...Do you think this is absolutely true or is not certainty? The Force of Light. Q: If there are 10 dimensions, then why don’t we notice them? E=mc^2 which means energy and mass are related, so how can light have energy when it doesn't have mass? The “dose” of X-ray radiation is carefully ascribed based on our body type/thickness of the part to be examined. Q: Do the past and future exist? Could you ask them which slit they went through afterwards? Sound does not have mass either, because it too is wave motion in a medium (air). Also! Q: Is it possible to create an “almanac” of human behavior that predicts everything a person will do? So if that’s what you want to make the point of, you’re right: light has energy and energy is mass. Q: Could God have existed forever? So why were physicists so enthralled by the photon they someone decided to assign a quantity of mass? Q: Is it possible to fill a black hole? According to relativity, mass can never move through the Universe at light speed. Q: How do I count the number of ways of picking/choosing/taking k items from a list/group/set of n items when order does/doesn’t matter? Q: What if the particles in the double slit experiment were conscious? Q: What are “delayed choice experiments”? How can one infinity be bigger than another? Q: Does how you deal cards affect how random they are? Sorry didn’t get to finish internet hiccuped. Is it awesome or worrisome? Q: Could we get rid of CO2 if we pumped it through a pipe into space? Q: How do I know my windmill is on straight? Q: Can you poke something that’s far away with a stick faster than it would take light to get there? Therefore the equation says there must be a mass for this energy to exist. What is “pure energy” like? Been close to 50 years since I had to use it. Q: How do I estimate the probability that God exists? Holy crap! By “we” I mean humans. Q: If two trains move towards each other at certain velocities, and a fly flies between them at a certain constant speed, how much distance will the fly cover before they crash? Q: How do we know that atomic clocks are accurate? Q: How do you prove that the spacetime interval is always the same? So a photon is outside of the mass is energy in concentration+ and energy is mass dispersed,then where in Einstein’s neat World does that fit a photon since it appears to be neither mass nor energy,so it more like Quantum Mechanics,you can know it exists, Q: Is there an intuitive proof for the chain rule? Q: How hard is it to build a space elevator? Q: Why are orbits elliptical? Q: Why does math work so well at modeling the world around us? However, that would be “relatively” (I now wince to use the term) instantaneous and without displacement during the impact. University of Illinois at Urbana-Champaign. Mass and energy are in deep interplay, and they deserve to be discussed together. Q: Why does the entropy of the universe always increase, and what is the heat death of the universe? Q: How can quantum computers break encryption? Photosynthesis is light being converted to mass. it is possible to see that, for example, our Sun going nova, or a much larger sun’s nova event, that photons emitted from that spectacle could be mass-bearing photons. Light has energy which equals mass while it’s moving. Proof after proof in example after example was laid out to explain the Higgs Field that imparts mass, the non-existence of light at rest (impossible if it had mass)… and nothing. Q: How do you talk about the size of infinity? Q: Is quantum randomness ever large enough to be noticed? What about capacitors? Time wrong because of time dilation nature of light gravity in black holes and worm?. 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