Search
How could a creature explode itself? Use Hexamethylene triperoxide diamine (or another organic peroxide)! Hexamethylene triperoxide diamine is an organic peroxide, which can be formed w...
In our universe, electric and gravitational force decrease with $r^{-2}$ because of the inverse-square law. Imagine a spherical shell around some point source. The area of a shell at some radius $...
(Ab)Use Religion to control the people A properly maintained religion can get people to do almost everything, and can guide their behaviour. People have killed others in the name of their religion...
You have to deal with the 3 body problem, specifically the small moon being pulled toward the much larger moon, and then moving away, and how this would destabilize the small moons orbit. The dista...
I think the two easiest ways for plants to communicate would be thus: Root System: Like in the movie Avatar, all of the roots connect somehow through the ground. This would also mean that certain...
The prime spot would be between the wings with the legs draped over and in front of the wings, straddling the neck. By sitting between the wings, the rider is at the center of propulsion, which ...
Radiator Fins Blood, lymph, or some other liquid is pumped around the ocular lasing organs to absorb waste heat and then through a radiator fin, where the heat is radiated off through the high sur...
For anyone who wants to see a cool simulation of a galaxy, merger, I can recommend a neat little applet): Galaxy Crash JavaLab.1 Two more good sites with a bunch of different simulations are the GA...
Rayleigh scattering is the primary reason that the sky is blue. Particles in the atmosphere "scatter" light in random directions. Blue light (along with violet light) has a shorter wavelength, and ...
Our universe is large enough that lots of weird things can happen. Believe it or not, we've found quite a few of them on exoplanets. This article about a paper on lightning on exoplanets (Bailey et...
This is perhaps not exactly the answer you are looking for, but I would suggest you consider the possibility of having the satyrs coevolve with your homids, but start from some other species. Human...
The biggest thing would be the storms caused by extreme low pressures. First off, because of the depressurization the temperature is going to drop way down. This would be cold even for Antarctic...
Since all the tech (including the airship engines I assume) runs on mana, then in addition to bowlturners ideas, you could limit speed by the need to "refuel". I'll have to make a few assumptions ...
Give them legs. They could be separate from birth and just covered with a swimsuit. Or they could be joined at birth and separate during puberty. These follow somewhat from some... Real life preced...
Both time dilation and length contraction depend on something called the Lorentz factor, commonly denoted by $\gamma$. It is defined in terms of the velocity, $v$, and speed of light, $c$, as $$\ga...
Couple thoughts on this... Angels aren't bred. Meaning, they don't have to mate, have baby angels, evolve, etc. Instead angels are designed and created, like robots, genetically engineered clon...
I will derive my solution by comparing to real-world precedents, and analyzing how these might be adapted by merfolk. (TL;DR: Rock domes.) Why do humans have houses? Shelter from the elements. ...
Assassinate Hitler In 1941, mid war, Hitler is assassinated with the hope that this would weaken the German top ranks, cause infighting, hurt morale, and bring a faster end to the war. Instead E...
Well, the first obvious difference would be that the square-cube law would basically be replaced by a cube-tesseract* law. Since 4/3 is closer to 1 than 3/2, this means that there could be greater ...
Human language evolved for the interaction between humans. That may sound like a trivial fact, but it isn't: If there had not been social interaction between humans, humans would not have evolved l...
I'm making the following simplifying assumptions: No time travel, time dilation or other temporal effects through use of those technologies (basically, the travelling works as if there were an un...
It is definitely possible. Like for example the earth at the time of the dinosaurs. Quote (from relatively far down on the page): As the world entered the Cretaceous Period, Antarctica was very...
Let's do a bit of math. According to Wikipedia, the mass of the moon is $7.3\cdot10^{22}\,\rm kg$ and its average orbital speed is $1.0\,\rm km/s$. That means its kinetic energy is $3.7\cdot 10^{2...
The defining equation of hydrostatic equilibrium - the state a celestial body must be in to maintain some semblance of a spherical shape - is $$\frac{dP}{dr}=-\frac{GM(r)\rho(r)}{r^2}$$ where $P$ i...
Not without artificial gravity or some other outside source. Your mega structure large enough to have an earth sized pocket is going to have a lot of mass. Something that big is going to need futur...
