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The study of how the properties of matter arise from its structure at all scales and of how processing can be used to modify those properties (often in pursuit of a specific application).

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I’m thinking of building a CRT (I believe it can be done), but I’ve hit a snag. I am planning on using either a 1000 mL or 2000 mL Erlenmeyer flask made out of borosilicate glass (Pyrex) for the tube. ...
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Is charge an intrinsic property of matter? For example, I can induce a static charge and also we see ions which are charged. But from a fundamental aspect, is it an intrinsic property of a substance?
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If a long thin strip /ribbon permanent magnet has its ends jointed forming a loop, then where will the north and south poles be located? On the thin edges? And if one end is turned $180^{\circ}$ ...
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I have two springs made from the same metal, one is a helical torsion spring, and one is a spiral watch spring. Both springs contain the same volume of metal in their active region. I wind up both ...
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One of my old t-shirts recently got a tear. When I pull near the tear, it easily tears more and more apart. When I looked through 20x magnification, I don't see difference of thread in place where it ...
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I would be very grateful for some feedback on if the following understanding of how ferromagnetic ordering comes about is correct or not: The consequence of the exchange interaction is that the energy ...
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A little bit of background here: I have a bachelor’s in chemistry and have broad interests in scientific topics but I am NOT a scientist. I can handle a mathematical explanation but not a specialist ...
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I’m interested in point processes, especially close to hyperuniformity. The points are distributed within rectangle $-L/2 < x,y < L/2$ where $L$ is large enough ($L \sim 10^2$) Number of points $...
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While the standard model of cosmology points to a beginning—often associated with the Big Bang—does modern physics strictly prohibit the idea that matter (or energy) has always existed? Or is there ...
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I am currently studying materials sciences, and I have just come across the concept of "stress-strain curve". As I understand it, as long as we keep the material in its elastic region, we ...
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I have just done hall measurements with applying different magnetic fields. I am meant to analyse how the magnetic field affects the charge carrier concentration and mobility for Platinum and Gold ...
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I recently saw a video where a person tests different arrows and their capability to penetrate a metal riot shield: What arrows can penetrate metal riot shields? The tenth arrow is not pointed and ...
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Consider a super-cooled water droplet impacting a solid substrate. Upon contact, the droplet begins to undergo heterogeneous nucleation. How can one calculate the time required for the droplet to ...
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Consider a sheet of glass (or any other breakable solid). Suppose you have many identically prepared copies of the same sheet, and you launch a bunch of fast-moving projectiles at the sheet from a ...
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The usual standard answer is that because of the air pressure: By sealing one end, you create a slight internal pressure that counteracts the external pressure applied during insertion. This further ...
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I have a monolayer semimetal with a nodal loop around Gamma point. The Chern number is 1 because this closed loop. I want to increase the Chern number without additional layer(s). In some papers, I ...
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Follow-up Question: Building on my previous question about the mechanism of guitar string tuning, I was wondering if it's theoretically possible to determine the tension in a guitar string simply by ...
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Is there a chart or a way to calculate the breaking point of a material such as spider wire made from Aerographene, 3D-Structured Graphene, or Metallic Microlattices under its own weight?
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Breaking length is a convenient measure of tensile strength because it's independent of cross section and quantity of material. But the breaking length calculation assumes the cable has a constant ...
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Suppose I have some given radial distribution function $g_2 (r)$ for a specific range of $r$ values, i.e., $0 \leq r < r_c$ where $r_c$ is some cutoff distance, for a given set of $N$ particles. Is ...
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I'm trying to come up with a way to produce a negative static charge in a material. I already know there are various materials that can more easily hold a negative charge, and I could produce one ...
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It was recently asked in my question. I answer "no change" as there is no direct factor between time and resistivity. I used this formula $ΔT ∝ I²/r³ $ to prove this. Could you tell me if I ...
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While I was reading about hailstorms I questioned myself about this: Let's suppose I have a hailstone. Let's say I drop this hailstone from a certain height $h$ respect to a glass of a window. From ...
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Inspired by: Was Calvin's snowman actually plausible? Could a snowman of the height he projected have stood upright without collapsing under its own weight?
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This is a clip I came across online just now and I'm baffled by the cone shape of the stick after friction. I can understand the outer rim possessing higher velocity therefore lost more material than ...
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Many Active Electronically Scanned Array (AESA) radars are based on Gallium Nitride ($\rm GaN$). I understand in principle how AESA radars work. What role does the $\rm GaN$ play? Why not some other ...
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In crystals grain boundaries and twin boundaries can migrate easily, while stacking faults can only expand or contract by boundary partial dislocation. Is this because stacking faults are highly ...
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At the very deepest point of the Mariana Trench, the water pressure is great enough to crush most things. But, gold is extremely dense, and also doesn't contain any space to be crushed into. So, what ...
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I am currently researching methods of nematic liquid crystal simulation, and I'm trying to simulate something myself. I need some well-researched crystal to simulate, with it's Frank-Ossen ...
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I have got this screen after executing Geant4. But I do not know how to proceed further to find the shielding thickness of lead, brass, steel and iron for 10mCi Cs-137 and 200 mCi Am-241 sources at 0....
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Sorry for the absurd question, but this is something I have always wondered about as a kid. I order a hamburger and pick it up. I bring it to my mouth and take a bite. Naturally, it remains a ...
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It is said that high-stiffness materials have a low damping ratio, meaning they resist oscillations less compared to low-stiffness materials. The reason why high-stiffness materials have a low damping ...
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I was reading through my A-Level textbook/notes and it defined the 'limit of proportionality' as the point beyond which the object does not conform to Hooke's law and the relationship between the ...
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EDIT: I have made cleat that this question is about a monocrystal sample and is not answered by the referred other question. I have read this question: What color is antimatter? where OP is saying: ...
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I am doing a practical in class which requires me to calculate the spring constant of a single rubber band. There is nothing special about this rubber band. This was done by attaching masses to one ...
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According to https://en.wikipedia.org/wiki/Timeline_of_the_far_future Armstrong's lunar footsteps will dissappear in about a million years due to space weathering. When will the other physical ...
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The stress tensor $\sigma_{ij}$ of a solid can be computed if all surface forces are known by solving a first-order PDE (assuming there are no body forces), $$ \frac{\partial}{\partial x_j} \sigma_{ij}...
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My understanding is that fission and fusion can be used to transform elements into other elements. My understanding is that the earth is 5.972 × 10^24 kg and composed mostly of iron (32.1%), oxygen (...
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I would like someone to explain me what kind of methods/algorithms need to be used for calculating thermodynamic equilibrium (using CALPHAD approach) for many component systems, containing more than 3 ...
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There are two bodies, Body "A" and Body "B". Both have the same mass but different stiffness. If both bodies have same heat energy or the same energy but differ in stiffness, it ...
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I have a doubt. We call a material elastic when there is very little loss of kinetic energy. However, when we strike two metal rods, they produce a high-amplitude sound compared to when we collide or ...
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Quasicrystals are currently only found in metal alloys. These alloys display 5-fold symmetry with icosahedrons as the building blocks. Considering that boron can also form icosahedrons, is it ...
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For example, the hardness of diamonds is 97 GPa in <100> face, and 162 GPa in <111> face, which means <111> face is 67% harder than <100>. Is this ratio the same for all ...
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The hole in a metal disk gets bigger when heated. This has been explained by the reason that if we take the already cut out piece of the metal and heat it separately it also gets bigger, but the metal ...
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We were studying elasticity and the factors responsible for the deformation of the body when a force by external agent is applied. So, while trying to explain the phenomenon that happen at the ...
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Imagine two vertical wooden boards clamping a small object. Assume that the left board is smooth, and the friction from the right board is enough to prevent the object from falling due to gravity. Now,...
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Is barium titanate (BaTiO3) thin film martensite? Recently, Everhardt et al., in PRL (123, 087603 (2019)), show that as temperature increases, the domain evolution shows period-doubling bifurcation ...
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The Wikipedia page on lithium-nickel batteries (among others) says that nickel and lithium cannot share an electrolyte in a battery, and that this problem is not easily overcome..... There can be two, ...
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I recently had seen an interesting experiment where a water bottle could be placed in a freezer for a while and would retain its liquid state until someone tapped on it, where it would quickly ...
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When one plots probability density associated to say d-orbitals of an atom, its lobes are supposed to be pointed in XY plane for $\textit{$d_{xy}$}$ and so on. But isn't this dependent on the ...
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