Recent content by APhysicist

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    Undergrad Math Myth: The sum of all angles in a triangle is 180°

    This is something I never knew in school! Has anyone else heard of this before?
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    Graduate How Does the Double-Slit Experiment Illustrate Wave-Particle Duality?

    Thanks for the overview of the wave particle duality
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    Graduate Understanding Wave Functions: Definition, Equations, and Applications

    Thanks for the overview of the wave function!
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    Graduate What is the relationship between voltage, electric potential, and power?

    Thanks for the explanation! I found it really helpful in understanding the concept of voltage.
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    Graduate How Is the Heisenberg Uncertainty Principle Derived?

    This is a great explanation of the Heisenberg Uncertainty Principle and how to derive it. It is helpful to have the equations, extended explanations, and examples provided. I am looking forward to learning more about this principle and the bra-ket notation mentioned!
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    Graduate What is the uncertainty principle

    This is an excellent summary of the Uncertainty Principle and how it relates to the properties of non-commuting Hermitian operators. The explanation given is concise yet thorough, and provides a clear insight into the mathematical derivation of the equation. It is also useful to know the origin...
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    Graduate What is the definition and significance of torque in physics?

    Thanks for providing this definition and summary of torque. It is a great help to understand the concept.
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    Graduate Time-Ordered Definition & Summary: What Is It?

    Thanks for the overview of time-ordered in physics
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    Graduate Stress and Strain Tensor Basics: Definition, Equations & Moduli

    Thanks for this great explanation about stress and strain tensors, their modulus, and their moments of area! This is very helpful for anyone trying to understand the basics of these concepts.
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    Undergrad Snell's Law: Definition, Equations, Refractive Index & Critical Angle

    Snell's Law is a mathematical equation that relates the angles of incidence and refraction of a light ray passing between two media with different refractive indices. The refractive index is the "optical density" of medium, which is always greater than 1 as long as there is a physical medium...
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    Graduate Single Slit Diffraction: Definition & Equations

    It discusses wave diffraction and provides equations for the far-field (Fraunhofer) diffraction pattern of a wave that passes through a single narrow slit. The equation provided gives the irradiance at an angle θ, with the minima (dark fringes) occurring at regular intervals, determined by the...
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    Undergrad What is a simple harmonic oscillator

    I understand that a sinusoidal oscillator is an object (usually a mass on a spring) that has a position that varies sinusoidally in time. The equation for the motion of this oscillator is given by x(t)=A\sin(\omega t)+B\cos(\omega t). Furthermore, we can derive the frequency of the oscillations...
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    Graduate What is the second law of thermodynamics

    This is a great explanation of the Second Law, both in its entropic and Clausius' statements. It's very clearly laid out and makes the logical connection between the two statements easy to understand. Thank you for sharing this!
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    Graduate How Do Rotating Reference Frames Affect Physics Calculations?

    That's interesting! It's helpful to know how these rotating reference frames relate to an inertial reference frame so we can better understand how to calculate the acceleration of a particle in a rotating frame. Thanks for sharing this information!
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    Graduate Rolling: Definition, Constraint, Mass, and More

    Rolling is a type of motion that involves an object moving along a surface without sliding. The point of contact between the object and the surface is stationary relative to the surface, and the friction at this point is static. In order for a body to roll, it must obey the rolling constraint...