Skip to main content

Fun Physics and Fiction

Time is the enemy. Dramatic events are unfolding, but will our hero be able to save the world, yet again, in time? Used to dramatic purpose time is a very useful tool as there are very few people who haven't been up against a deadline, real or constructed. They can feel the tension building, the expectation of succeeding slowly winning out over defeat or receding as panic sets in. Split seconds described in paragraphs that take ten times as long to read than to happen in book time.

Time can also be used dramatically in a longer term view in science fiction. Where will we be in so many years? Time travel is another way, and then there are the books that stitch together star systems with relativistic travel, decades long travel between stars and everybody that you knew when you headed out is long dead and hundreds of years have passed. To me it is depressing, or rather actually scary. When we travel on Earth we get those same affects, but since we are no where close to the speed of light we don't notice that those people sitting still are relatively older than us.

So most science fiction that isn't diligently exploring what life would be like without a go-faster-than-light card creates a way to travel faster than light without the time dilation problem. However, they try to limit themselves with problems such as gravity wells and where and how the drive works. So let me introduce an idea for FTL drive that is limited in its own way, I might have equations...

First, the Basics

Discovery of a universe "below" ours that our universe is wrapped around. It is smaller in the fact that things can move much faster through it. The main feature of the neighbor universe, sub-space, is that it has no electromagnetic force, but it does show the effects of our universe in terms of gravity. A ship going in unprotected would just fall apart as all the electromagnetic forces holding atoms and molecules together would collapse.

Also gravity wells are a major player, essentially entering and leaving the sub-verse must be done at a similar gravitational potential energy. Coming in at higher potential energies cause major power stripping coming in, lower potential energies means the possibility of overwhelming systems with incoming energy. There is no limit to how far inside or outside a gravity well a ship must be however, orbital and absolute velocity relative to mass and proximity affect the velocity in the sub-verse.

What do I want my timelines to be in the universe? Do I want to make it such that we are retelling old sailing tails and battles on the high-ocean? Or skipping across the universe seemingly unfettered? I think I have enough restrictions to play with both logically and dramatically, but I also want a bit of down-time, unable-to-do-anything time that my characters might need to experience. I think reasonable speeds would be about two light-years in and hour, meaning about 8760 times the speed of light. Of course that is highly variable due to the gravity well that you are exiting.

One of the major problems with early travel using this drive was pointing and timing. Hitting a star's or planet's same orbital potential in such a way that you weren't just plummeting toward its surface but instead tangent and able to establish an orbit was extremely hard, however the first wave of extra-solar colonists risked it.

I will continue these thoughts in the next installment.

Comments

Popular posts from this blog

Allergy

John studied himself in the mirror as best he could through tears. Red, puffy eyes stared back at him, a running nose already leaked just a minute after using a tissue. He couldn't do his job well if he always looked like this. He readjusted his coat and a sneeze caught him unaware. At least he had an appointment with the doctor today.

***

 "Mr. Filner, I am afraid that the results were inconclusive." Dr. Snozuk came bustling into the small room a clipboard in one hand with papers folded over the top and a pen in the other hand. "We only found one thing that you seemed to have a serious immune response to, and it simply doesn't grow in this environment."

"But if I am not allergic to anything else why do I have all the symptoms?" He tried not to wipe his nose on the jacket sleeve. Dr. Snozuk must have noticed John's involuntary half-lift of his arm because he grabbed the box of tissues behind him and set it next to John.

Dr. Snozuk waited while…

Manufacturing Coming to a Place Near You

It’s old news, 3d-printing, unless you just got a printer for Christmas.


I have been following the advent of consumer 3D-printers for quite a while, and they’ve basically revolutionized how an individual (normal, not owning a fab-factory) can think about custom trinkets or replacement parts.


Other than the price why am I excited to get a 3D-printer? While watching them get better and cheaper, it really has to do with two things: Exposure to the tech at COS and a major failure almost exactly 10 years ago.

First a bit of panic about the fact that it has almost been 10 years since the end of my undergrad degree. I guess I am celebrating by taking two graduate courses: Computer Vision and DB systems… Ten years later. It brings up some interesting memories of how bad a student I was, and how my senior project suffered because I had no clue what I was doing. I needed to design a circuit board, get parts manufactured, and write a program that would all be part of a telescope system. Much too mu…

Parallel Dreams

I thought I was prepared for anything, but as the alien creature advanced on me I still sat in shock. It studied me as it came toward me, carefully stepping around what I supposed were the corpses of people I had known quite well. Its head was slightly elongated and sloping back with what looked to be extra eyes along the edges, a blue stripe connecting them.
Something shifted next to me and I saw that it was Todd, but he didn’t look too well. He perched on his seat with blue glowing things evident on his skin. The being’s attention was on him as well, then a surprise.
“You will not be like him, he is merely a breeding colony. Important but otherwise useless.” Its attention swung back to me. How did it know English? “You on the other hand, will be like me.”
Of course a smart remark right now might save me from a fate worse than death, but nothing came. The creature passed within a couple feet of me and plucked a blue-glowing orb the size of a pea from Todd who seemed unconcerned.
“Hold ou…