After much thought, Richard had a guess that the so-called "highly activated state" was likely to be the "energized state".

In a normal human body, the metabolism and nerve signaling of cells in the body are accompanied by the flow of potassium and sodium ions on the cell membrane, resulting in bioelectricity. This bioelectricity is very weak, and the voltage is generally in the millivolt range (millivolt is mV, 1 volt is equal to 1000 millivolts).

Although weak, bioelectricity is of great significance to people, and its changes can directly lead to changes in cell metabolism or function in the body. For example, when a nerve fiber is electrically stimulated, the excitability at the cathode increases and the membrane potential decreases (depolarization), while the excitability at the anode decreases and the membrane potential increases (hyperpolarization).

According to the description of the construction of the Dharma source in the "Monroe Chapter", it is obvious that the body structure has undergone some kind of transformation. The so-called spiritual power is used in it, which is very likely to be related to this bioelectricity. Perhaps it is to increase the biocurrent in the human body to a certain extent, so that the body can open up a new "organ" of "Dharma Source" under the action of spiritual power.

Of course, this is just a guess, and whether it is right or wrong remains to be verified.

The main reason why Richard called two maids was to try to make a battery that could discharge electric current for testing in the current Middle Ages, which had nothing to do with "electrification".

First of all, Richard was ready to make the simplest fruit battery. All you need is a piece of copper, a piece of zinc, a piece of wire and a piece of fruit.

Because copper and zinc are different in their active forms, when the fruit is inserted, the zinc sheet undergoes an oxidation reaction, loses electrons and flows to the copper sheet, resulting in an electric current in the wire.

Because there was no difficulty, Richard said a few words and asked the maid Angel to make it. The other party did not disappoint Richard, and soon after the production was completed, he saw a thin wire connected to a piece of copper and zinc the size of a fingernail, inserted into a pear.

The maid Angel carefully handed the fruit battery to Richard, and when Richard touched it, he frowned, and immediately knew that the fruit battery was unqualified.

It's not so much about making it, after all, it's so simple that it's impossible to make a mistake, it's about the fruit itself. Because the fruit juice is acidic, the chemical reaction can be successful, resulting in an electric current. However, compared to real acid, the acidity of fruit juice is still too weak, so the current and voltage generated are too small.

Richard felt it for a moment, and estimated that the voltage was less than 0.5 volts, and the current was less than 1 milliampere, which was stronger than the normal biological current of the human body, but it was too reluctant to have any effect on the inside of the body.

After all, there is resistance in the human body, and if it is a spontaneous increase in biological electricity in the body, it is naturally nothing, but it is impossible for a normal person without wizard talent to do it. In order to apply an electric current from the outside and have an impact on the body, and to decipher the reshaping of life in a scientific way, it is necessary to overcome the resistance of the human body up to more than 1000Ω, and a stronger current must be applied.

Now the question is, how do you get a stronger current?

Richard frowned, thought for a few seconds, and began to ask the two maids to make different fruit batteries.

Depending on the type of fruit, the acidity of the juice is also different, so the current generated can be divided into strong and weak, and finding the strongest one may be able to meet the requirements regardless of the body's resistance of more than 1000Ω.

The fruits of the Middle Ages are not small, including cherries, strawberries, blackberries, apples, pears, cherries, plums, grapes, plums, gooseberries, mulberries, blackthorns, figs, dates, limes, lemons, etc.

Richard commanded, and naturally someone prepared the fruits. After a while, except for some that were not yet ripe due to the season, the rest were placed on the experimental table.

Richard waved his hand, and the two maids, Angel and Luna, quickly made it, and after a while, various types of fruit batteries were placed on the table in two rows, Angel's on the left and Luna's on the right. Obviously, Angel made a little more in number.

Richard didn't comment much, reached for a fruit battery and tested it with his body, and after a while, put it down and picked up another.

After repeating this many times, after testing all the fruit batteries, Richard already had an understanding in his heart. Because of the different acidity of the fruits, there are several fruits that do emit stronger electricity than the original pear, such as apples and gooseberries. The strongest of them is the lemon, but even so, the voltage is just over 0.5 volts and the current is just over 1 milliampere.

Normally, the minimum current that an adult male can elicit sensation is about 1.01 mA on average. That is to say, under the action of the resistance of the human body, this level of current can just make an ordinary person perceive.

This was not what Richard wanted.

Richard stood in the laboratory and frowned deeply, and the two maids looked at Richard's solemn expression, looked at each other and didn't dare to breathe, and lowered their heads carefully. Although they know very well that His Royal Highness the Prince will not lose his temper casually, let alone punish his subordinates for no reason, it is always not a good thing that His Royal Highness the Prince is unhappy.

Richard didn't know what the two maids were thinking, but continued to think seriously about how to solve the problem.

How do I get a stronger current?

Maybe make a battery out of the rest of the plants except the fruit, you can give it a try. For example, the famous potato clock is made from potatoes.

But...... It seems that there are no potatoes in the current Middle Ages.

After all, according to the development of modern earth, it was not until the Age of Discovery after the Middle Ages that people spread potatoes from South America to Europe.

In the current medieval-like world, Richard could not determine whether it was the one in the history of the earth, whether there was a so-called South America and Europe. But it's true that there are no potatoes, so you don't have to think about potato clocks or anything.

Then again, even if a potato clock is actually made, there is a good chance that it will be scrapped. After all, in order to ensure the normal growth of plants, they cannot be too acidic. It is very likely that after trying all the plants in the current world, the current generated by the battery is only in the same range.

In that case......

Richard's eyes narrowed, and they flashed quickly.

In this case, then only real batteries can be made, such as voltaic stacks.

The voltaic stack is the first recorded generator in the history of modern earth, invented by the Italian voltaic on March 20, 1800. The structure is slightly more complex than that of a fruit battery, but it is not too difficult, the key is the preparation of materials.

That being the case, then......

Richard turned his head to look at the two maids and quickly gave an order: "Anqi, you go and prepare some salt water, the concentration is moderate." Luna, you come with me and trim these linens to the same specifications. Then the copper and zinc sheets in these fruit batteries are processed and cut into rings......"

After Richard finished speaking, the two maids quickly answered and began to get busy.

After a short time, the materials were ready, and Richard began to make voltaic stacks himself on the experimental table.