Why is it that I am not able to read a book without moving my eyes if the entirety of the page is within my field of view? Why do I have to center my eyes on an object to observe it fully? And why is it that I am still able to view changes in surroundings in the edges of my field of vision despite there being supposedly no way...
I seem to remember as a young child being told that it is safe to touch a Van de Graff generator (for the hair demonstration), but that if you let go before it is safe you will get a nasty shock. I know a bit more about electricity now, and I'm a little skeptical now. Is it possible to get a shock from letting go of something?
I’m trying to wrap my head around something that appears far more complex than I first thought. I don’t understand the explosive elements and chemistry that drives ash production and the heat to create the eruption column. I’m aware of how molten metal behaves in a foundry crucible with flux and degassing required. So I...
I mean, I’ve heard that you can typically only survive about three days without water, but what exactly causes your body to fail when you dehydrate too much?...
I know that sound doesn’t travel in a vacuum, you can hear it muddled in water, and different temperatures of air transmit better. But which is the “best”. Let’s say you had a speaker and a microphone in an enclosed case filled with whatever you wanted, which would be the best medium to ensure the best sound...
I understand how lucky imaging gets the results it gets, but I’m wondering specifically how the 10% of frames are chosen....
I am simply on a quest to find an effective non-distillation method for purifying isopropyl alcohol used for rinsing resin 3D prints....
cross-post: lemmy.world/post/1426387...
I really enjoy videos about science, but they are getting harder to find on modern platforms. Is there a community out there dedicated to discussing and recommending good content regardless of platform?...
I just watched the recent video from Stephen Milo on human life 1 million years ago. He mentions cannibalism evidence across multiple events. That has me thinking about morality in isolated groups and how it might have evolved or could evolve differently....
Found this very useful Youtube video about How do Magnets & Magnetic Fields Work? and within it I finally found someone willing to explain greater details about how same poles repel in laymen terms. The link above takes you to the section where the Presenter explains how (as I understand him) potential energy forms between the...
There’s a good many gravity theories, some that don’t even try to explain the why, only the how and other’s that involve some particle like the graviton. But anyone know if there’s any based on the energetic vibrations of our known particles with mass (those within protons and neutrons)? In other words, gravity’s space...
I’ve read that at the center of large celestial bodies there’s zero gravity (or close to). While confirmation would be nice, if true, I’m wondering how large that area can actually be and moreover, does it scale up with more mass and/or even size - that is, does the sun have a larger center area of low (zero?) gravity than...
The following mechanism, by continually creating matter in the universe, if self coherent, would solve many unsolved physical problems : this cosmology would do without a big bang....
There’s a billion quizzes online that say they can help you choose your first pet, and my 45 minutes of googling before posting this did turn up a single blog that suggested that owners of a class of pet share certain personality traits and lifestyles (although they frustratingly seemed to forget that people own things like...
In digital devices, we have pixels, which represent the smallest unit of size anything can be in a digital program. Something that is a single pixel in size in every dimension cannot get smaller. Depending on the software, though, sometimes their shape is not consistent with one another; a pixel could be square, hexagonal, etc....
I’m having trouble wrapping my head around the scale of the problem of nuclear waste. If we took all the nuclear waste produced in a year and evenly blended it into all gasoline burned in a year would the radiation be deadly? Dangerous? Detectable?...
I remember reading somewhere that mathematical symbols make up an “incomplete” written language (or something like that). I commonly formulate problems, or complete sentences using only mathematical symbols. From a linguistic perspective, what separates mathematical symbols from “complete” writing systems?
According to quantum field theory, the universe can be thought of not as isolated particles but continuous fluctuating fields: matter fields, whose quanta are fermions (i.e., leptons and quarks), and force fields, whose quanta are bosons (e.g., photons and gluons). All these fields have zero-point energy.>...
(To be clear, I’m more interested in the reach and scaling of gravity.)...
I tried finding some research and found lots about freezing matter or putting it under extreme pressure, but not trying both....
More of a classification question, but I’m really curious about what the metric would look like if we try to be systematic about it....
Does anyone know where I could find a reasonably priced photon pair generator online?
I have heard this mentioned several times with this exact wording, that faster than light travel would break/violate causality and I do not exactly understand why and how it would do that. Could someone more well-versed in physics explain to me why that would be the case? Or is it not the case? (Yes, I am fully aware, that...
