An application that can tap into a smartphone’s built-in barometer can be a helpful tool for teaching students about Stevin’s ...
Dot Physics on MSN
Electric field of a uniformly charged sphere using Gauss’s law
In this video, we use Gauss’s law to find the electric field of a uniformly charged sphere. We derive the field both inside and outside the sphere, explain the symmetry behind the Gaussian surface ...
Dot Physics on MSN
Gauss’s law derivation for the electric field of a long charged rod
In this video, we derive the electric field of a long uniformly charged rod using Gauss’s law. We choose an appropriate Gaussian surface, apply symmetry arguments, and walk through the math ...
Fragmentation, or how things break, may seem like a truly random process, but new study shows that fragmentation will actually follow a process to maximize entropy. This behavior is a manifestation of ...
A new mathematical equation describes the distribution of different fragment sizes when an object breaks. Remarkably, the distribution is the same for everything from bubbles to spaghetti. When you ...
The original version of this story appeared in Quanta Magazine. If there’s one law of physics that seems easy to grasp, it’s the second law of thermodynamics: Heat flows spontaneously from hotter ...
Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: Graphene is stronger than steel ...
For the first time, scientists have observed electrons in graphene behaving like a nearly perfect quantum fluid, challenging a long-standing puzzle in physics. By creating ultra-clean samples, the ...
Motivated by electrodynamics we discuss a derivation of the Stokes theorem which is based on the variations of the fluxes and line integrals of vector fields. We show how this procedure can be ...
The internet is full of people claiming to uncover conspiracies in politics and business. During the pandemic, public health experts and pharmaceutical companies became popular targets. Now an ...
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