Will we ever know if Pi is a "normal" or "non-normal" irrational number? Is it within the realm of possibility that we will ever find out? |
- Will we ever know if Pi is a "normal" or "non-normal" irrational number? Is it within the realm of possibility that we will ever find out?
- If Mars at some point had oceans that were filled with life similar to our own, would there still be oil there despite the harsh Marian conditions and what we know about the planet?
- The liver breaks down alcohol, but what does it break it down into?
- Are there any noticeable differences in the behavior of pets raised in different cultures?
- Why do most of the tall structures have a needle type thing on top of them?
- Why are lightning bolts blue?
- Please clear things up for me about the Great Barrier Reef. How much is gone, how much is bleached, can it be saved, what are the long term effects?
- Why do eyeglasses "work" even when held at arm's length?
- If a planet is a gas giant, where does the sky start and the body of the planet begin? Is the entire planet just sky?
- Is it possible for meteoroids carrying microorganisms from Earth to travel to another planet, such as Mars, and seed life onto them?
- When a meteor impacts the moon, does the Earth feel any consequences?
- Are there different "invisible" inks that can only be seen from different UV wavelengths?
- Would a jar that had an absolute vacuum float or sink in water or air?
- How to visualise unpolarised light?
- Why is the lather of a soap always white, no matter it’s original colour?
- Why is Pluto's argument of periapsis 113°?
- How are there different forms of ice and how do they work?
- Do people with artificial hearts burn less energy?
- When did different eye colors emerge in humans, and do we know anything about ancient ancestral eye color?
- Why does the USS Indianapolis seem to be in much better condition than the Titanic when it was first found, when the amount of time between the sinking and discovery of each ship was about the same?
- The rate of obesity has increased worldwide in recent years. What effect does genetics have on obesity, and are there any specific genes that have a larger impact than others in determining risk of obesity?
- If the color white reflects all light and mirrors reflect all light, why don't they look the same?
- How are flu vaccines made every year before flu season?
| Posted: 20 Aug 2017 02:02 PM PDT According to what I've heard, a "normal" irrational number is one whose digits contain every conceivable combination of numbers (including, for example, the social security numbers of everyone who has ever had an SSID in alphabetical order), while a "non-normal" irrational number is one whose digits are infinite but do not contain every possible combination of numbers. So I guess I have two questions: 1) Will we ever know which of these categories Pi falls under and 2) How is it possible to have an infinite number of non-repeating numbers without any patterns that doesn't eventually run through every possible numeral combination? Edit: thank you for all the awesome answers! I now totally understand question #2 and would like to propose another question for anyone who sees this after this edit: What is an example of a normal irrational number and how can we prove that a number is normal? (Is a normal number defined as any irrational number that contains all the digits of its respective base an infinite number of times...or...?) [link] [comments]  |
| Posted: 21 Aug 2017 05:51 AM PDT |
| The liver breaks down alcohol, but what does it break it down into? Posted: 20 Aug 2017 04:09 PM PDT |
| Are there any noticeable differences in the behavior of pets raised in different cultures? Posted: 20 Aug 2017 08:21 PM PDT |
| Why do most of the tall structures have a needle type thing on top of them? Posted: 20 Aug 2017 07:15 PM PDT Like in this picture - https://drive.google.com/file/d/0B5gYDDbu6LmQOXVMZEdDa21LZ0k/view?usp=drivesdk I am new to reddit, I didn't know where to ask, but hope you guys understand me. [link] [comments]  |
| Posted: 20 Aug 2017 03:43 PM PDT |
| Posted: 21 Aug 2017 05:50 AM PDT |
| Why do eyeglasses "work" even when held at arm's length? Posted: 20 Aug 2017 04:45 PM PDT My understanding is that myopia makes images focus in front of the retina. Let's say that in my case it's 1cm. If I pulled my glasses forward 1cm, shouldn't it be the same as having uncorrected vision? Instead, I can see things clearly (even if a little distorted) if I look through eyeglasses even if I hold them a metre away from my eyes. How does that work? [link] [comments]  |
| Posted: 21 Aug 2017 06:58 AM PDT |
| Posted: 21 Aug 2017 12:01 AM PDT And if possible, how likely is a situation like this to occur successfully? [link] [comments]  |
| When a meteor impacts the moon, does the Earth feel any consequences? Posted: 20 Aug 2017 08:24 PM PDT I understand that very small meteors impact the moon somewhat frequently, but as indicated by the surface of the moon, much larger meteorites have struck it as well. Assuming a reasonably sized meteor, at what point does a meteor destined to strike the moon pose a risk to Earth? And as a follow up, in what way(s)? [link] [comments]  |
| Are there different "invisible" inks that can only be seen from different UV wavelengths? Posted: 20 Aug 2017 12:11 PM PDT For example, could you have one of those hidden message pens sold in stores that couldn't be viewed by another different pen because it uses a different wavelength of light? Or are all the inks visible from any UV light? And aside from theoretical, is this already a thing? [link] [comments]  |
| Would a jar that had an absolute vacuum float or sink in water or air? Posted: 20 Aug 2017 11:23 PM PDT |
| How to visualise unpolarised light? Posted: 21 Aug 2017 02:15 AM PDT I initially thought that unpolarised light was just a single pair of electric and magnetic field waves changing rotations really quickly, giving it the effect of having "random" rotations. Secondly, I thought of quantum effects being present, where the wave position and rotation would be in superposition until it was observed. But this doesn't make sense, as this would mean you could polarise light just by looking at it. (or the wave function collapses into a point photon, which has no polarisability) I've read on several websites that unpolarised light is basically both the electric and magnetic fields of light, oscillating in random directions and at different phase differences. So does it seem that the unpolarised light following the direction of the wave could be visualised as a cylinder? The radius of it being the amplitude of the waves, to be clear. In addition, the "volume" of this cylinder consists of fluctuations in both the electric and magnetic field. [link] [comments]  |
| Why is the lather of a soap always white, no matter it’s original colour? Posted: 20 Aug 2017 11:35 AM PDT |
| Why is Pluto's argument of periapsis 113°? Posted: 21 Aug 2017 04:52 AM PDT Looking up the argument, it is quoted as 113.834° (Wikipedia). This implies that Pluto is closest to the Sun when it is 113° from the first point of Aries, i.e. when it is in roughly the 24th point of Cancer. However, Pluto was last at perihelion in 1989, when it was in mid-Scorpio. I would have expected its argument of perihelion to be more like 225° based on this knowledge... Why doesn't the argument of perihelion point to the correct location? NB: this is not an issue of axial precession and the drift of the constellations with respect to the tropical Zodiac co-ordinate system, that shift is less than 30°, and does not explain this large offset. [link] [comments]  |
| How are there different forms of ice and how do they work? Posted: 20 Aug 2017 09:01 PM PDT I've read that there can be all different types of ice. That don't necessarily have to be cold. Mainly on other planets and stuff, but how is this possible and how does this work? How can it have more than one solid form? Is "hot ice" a thing just held together by pressure and not temperature at all? [link] [comments]  |
| Do people with artificial hearts burn less energy? Posted: 20 Aug 2017 01:09 PM PDT edit: After doing some research it seems artificial heart tech is far less portable than i had thought [link] [comments]  |
| Posted: 20 Aug 2017 10:49 AM PDT |
| Posted: 20 Aug 2017 12:18 PM PDT |
| Posted: 20 Aug 2017 04:01 PM PDT |
| If the color white reflects all light and mirrors reflect all light, why don't they look the same? Posted: 20 Aug 2017 01:37 PM PDT |
| How are flu vaccines made every year before flu season? Posted: 20 Aug 2017 06:35 PM PDT AFAIK, the flu changes and adapts every year requiring us to get the shots every year but how are they made before the new flu strain is even out? [link] [comments]  |
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