Later, there was an accident, an assistant caused a large explosion due to improper operation of high-pressure gas, and many people died, even the doctor's wife also suffered misfortune, and then the world government was established, and the project could no longer receive financial and technical support, so it was completely shelved. ”

However, Dr. Daimori himself is still engaged in this research, and his purpose has become very simple, he wants to go back to the past, remind his friends to pay attention to research, and not to have accidents. It was also from this time that his time machine really made more substantial progress. ”

Speaking of this, Bulma was slightly stunned, shrugged his shoulders, and spread his hands: "The words are far away." The space-time machine developed by Dr. Daimori was originally conceived to take the entire country, at least an island, on a time travel journey, and the scope of influence was so large that of course it could not succeed. ”

"Let's talk about it," Leping didn't care, "Can you elaborate a little bit?" I'm very interested in this. ”

Who isn't interested? Especially this kind of artificially controlled crossing.

"You're interested in time machines?" Bulma paused for a moment, "Okay, let's talk about time machines." ”

It seems that she is also interested in this topic, is it because of the itch of being a technician?

"The time machine - oh, it should be said that it is Dr. Dasheng's time machine, referred to as 'Dasheng-style time machine', I am not sure if there will be another form of time machine in the future - it is essentially a jammer, and its principle is to interfere with the speed of time within a certain range with a certain amount of traversal energy. The speed of time passing is usually fixed at 1, which means that '1 hour' is used to pass '1 hour' - can you understand me?"

Leping said he was confused.

Bulma shook her head, "Let me put it this way, if the speed of time in a space is 0.5, then the speed of time in this space is half that of the outside world, and if you stay in this space for a day, you will find that two days have passed outside the space when you come out." If the speed of time in this space is 2, you will stay in it for a day, and when you come out, you will find that only half a day has passed. ”

"Oh......" Leping nodded—but he still couldn't help but complain: "Although I understand what you mean, I can't understand what you said before, 'pass 1 hour with 1 hour'." ”

Bulma spread her hands: "What's the solution? I haven't touched on these topics before—okay, let's not talk about that, let's talk about the time machine." After a moment's thought, he continued, "The normal time lapse rate is 1. Anything greater than this will speed up the time lapse, less than this but greater than 0 will slow down the time lapse, if it is equal to 0, the time will be frozen, and if the value continues to decrease until it reaches a negative number, time will be reversed. ”

"Now that we've talked about the passage of time, it's time to talk about interference. The speed at which time passes is usually constant at 1, but it can be disturbed for some reason, most notably in your spiritual time house. The speed of time passing inside is 365 - hence the fact that there is a year inside the room and a day outside. But ......"

Speaking of this, Bulma's face showed an incomprehensible expression, "The principle of the Spirit Time House interfering with time is not the same as the way the Time Machine interferes, and so far I have not been able to understand how the Spirit Time House interferes with the flow of time. I just called the time machine a 'Dasheng time machine' because I wasn't sure if there would be a 'spiritual time house-style time machine'. ”

"Okay, for now, let's get back to our time machine. The interference of time by the Dasheng time machine is done through the use of energy, and a certain amount of energy can only change the passage of time in a certain amount of space......"

"Can you build a formula?" Leping interjected. Such a statement is difficult to understand. ”

"Absolutely. Bulma got up, took a pen and paper and wrote the formula: e=a*v*s.

Leping looked at the formula, then at Bulma, and the meaning was clear: explain.

"E is energy, v is space, s is duration, and a is the degree of change in the passage of time, which is equal to the absolute value of the speed of time lapse after disturbance minus 1. If time passes at ten times the normal rate, then a is equal to 10 minus 1 equals 9, and if time is reversed at ten times the rate, a is equal to -10 minus 1 equals -11, and the absolute value is equal to 11. Got it?"

Leping nodded, Bulma left him a little time to understand, and was about to continue to explain, but heard Leping preemptively say: "According to your formula, can I derive the unit of crossing energy: to stop the passage of time in 1 cubic meter of space for 1 second, the energy required is 1 crossing unit - well, it can be called 1 bulma." ”

"If you want to stipulate the name of the unit, it should also be called 'Dasheng'. "Bulma has really changed, very modest," you understand correctly. Now, let's do the questions to practice – interested?"

"Please. "Of course Leping is very interested.

"It is known that the volume of the time machine is 3 cubic meters, and it has to go back to 20 years ago, and the whole travel process needs to be completed in 1 hour. ”

Leping: "V is equal to 3, S is equal to ...... 3600, a is equal to ......" had to pick up the pen, "to reverse to 20 years ago in 1 hour, then the time flow rate should be equal to negative 20 * 365 * 24 equal to ......-175200, and then subtract 1, equal to -175201. Substituting the above numbers into the formula, then e is equal to ......"

"The final count is 1892170800. Bulma didn't bother to wait for Leping to calculate the number, and gave the answer directly, "Okay, the number is too big, it seems that we have to use 'Thousand Dasheng', or 'Zhao Dasheng' as a practical unit of measurement, then the above data is about 1892 trillion Dasheng - it seems that you have mastered this formula." ”

"Then, through this formula, you will know where Dr. Daisheng has failed. ”

—————— —————— cut —————— line——————

Leping looked at the formula for a while and understood: "It's because the v in the formula is too big, right?"

"If E is big enough, then no matter how big V is, it's not a problem," Bulma said indifferently, "The problem is that the energy stored by the time machine is limited, and the interference energy that can be released per unit of time—which can be called the power of the time machine—is also limited." Therefore, the V amplification in the formula is very problematic. A ship with a displacement of 100,000 tons, with a volume of more than 200,000 cubic meters, this is just a ship, an army, a country, how much volume should be occupied, such a large factor, will inevitably squeeze A to a very small, so the time machine made by Dr. Dasheng is very difficult to make time stay for a short time. ”

"When it comes to me, because you only need to travel through the space where the time machine itself is, V becomes small, and A can of course become big - for example, Trunks can travel back 20 years in an hour. By the way, 170,000 Dasheng per second is basically close to the power limit, and the maximum power of that machine is 200,000 Dasheng per second. ”

(In Galactic Patrol Gack, the time machine is able to stop rockets in the distance, while Trunks' time machine apparently only allows him to travel through time on his own, showing that the two time machines have very different spheres of influence.)

In addition, does today's content let everyone see clearly the power of "serious nonsense" in the ground effect? ^-^)