Zhang Tao took the bottle containing the ladybug and put it on the table, first observing which one was a female and which was a male. Pen, fun, pavilion www. biquge。 info female insect is a little bigger than the bear insect, use tweezers to pick out the largest ladybug from the bottle, put it on the table and immediately pretend to be dead and motionless, just with Zhang Tao's mind. Turn the ladybug over and see that there is a bulge at the end of the ladybug's abdomen, which matches the characteristics of a female, and if it is a male, the end of its abdomen will be concave a little inward, which is very easy to identify.

Use pliers to cut the thin copper wire short for a short period and carefully fix the ladybug that pretends to be dead, and the ladybug will fly away after a while. After tying the ladybug began to move, first cut off the third pair of the ladybug's articular feet and throw them away, the third pair of joints will bring out the alkaloids in the ladybug's body to produce an unpleasant smell, remember when I was a child, I caught the ladybug and washed it for a long time to wash off the pungent smell.

After cutting off the third pair of segmented feet of the ladybug, turn it over with tweezers. Use a magnifying glass first to see if there is any dust on the ladybug's head, and there is no dust. Place something under the ladybug and point the ladybug's head at the microscope to observe the ladybug's olfactory organ. The glands in the head and tail of the ladybug were removed and the ladybug was thrown away.

Then take out the smallest one, observe that the end of the ladybug's abdomen is a little concave, confirm that it is a male insect, and then remove the olfactory organ of the male ladybug and throw away the ladybug.

Take out a piece of white A4 paper and place it on the edge of the table, place the organs of the male and female ladybugs on the left and right, and observe them with a microscope.

The ladybug's olfactory organ is attached to the ladybug's internal carapace, which converts the sensations that produce chemical reactions into bioelectric currents that are transmitted to the brain.

Zhang Tao usually likes to watch the animal world, the 22nd century animal world is interspersed with some animal organ structures and principles and some instruments invented based on animal organs, some things that are not understood in the 21st century have been solved in the 22nd century, and all aspects are qualitative leaps.

Although ladybugs can smell up to 20 kilometers away, the instruments made according to their principles are only about a few kilometers away. Now using these rudimentary materials to make mushroom detectors, the theoretical value of mushroom detectors that simulate the ladybug's sense of smell without interference can reach two kilometers. Raising the distance is not something that these rudimentary scientific instruments can do.

Zhang Tao understands the specific principle, but the specific experimental parameters have to be completed by experimental observation. Write down the experimental data parameters on paper and glue them to a notebook for easy access.

After Zhang Tao packed up the experimental table, he went to the Wujiaohua Building to buy some high-grade solutions and digital simulators, and went to the shopping mall on the street to buy a silver bracelet for experiments, and spent some money with little money left in his pocket.

After returning to the rental house, Zhang Tao poured several solutions into the test tube and shook them slowly, let them fully fuse and pour them into the beaker to precipitate, after a while, some sediment appeared at the bottom of the beaker, and the surface of the beaker was no longer bubbling, and put the beaker aside.

Next, use a drill bit to drill a small hole in the middle of the two sides of the glass tank, and thanks to the experience gained yesterday, this time it was a success. I took a canned food box, cut out the tin sheet, and broke it into a rectangular box with no lid with pliers. Then use scissors to cut a piece of wood into a rectangle and put it in a small tin box. Another spoonful of sugar was sprinkled on the surface of the wood chips.

Bring gloves and pinch the corner of the silver bracelet with tweezers and bake it on the natural gas stove, after baking for more than a minute, the corner of the silver bracelet is roasted red, and after another minute, the corner of the red silver bracelet has a tendency to change to liquid, quickly turn off the natural gas, put the silver bracelet on the top of the small iron box and then use an electric soldering iron to heat it closely, and the melted silver is coated on the wood chips, and the high temperature generated by the melted silver instantly carbonizes the sugar into carbon, and the wood chips also have a tendency to carbonize. When the silver cools, it becomes solid and does not stick to the chips.

Put the small iron box aside, pour the solution in the beaker into the drilled glass tank, wait for the silver to cool down for a while, the rent is still a month and a half due, Zhang Tao found the landlord to refund the room fee for a month, and the landlord agreed to give the counter money.

It is estimated that the experiment will be completed in a few days, and Zhang Tao is in a good mood. The money used to buy things quickly suffocated Zhang Tao's wallet, coupled with the ultra-expensive prices in the capital, it is estimated that he will have to go out to beg for food for another month.

When I returned to the rental house, the silver had cooled, so I gently picked up the silver chips on the wood chips with tweezers and clamped them, brushed off the carbon under the silver chips with a brush, and then wiped the silver sheets clean with a cotton swab dipped in some alcohol.

The silver sheet is cut into thin strips of silver wire with scissors, and the silver wire is connected to the digital simulator, resistor, and display with a soldering iron and solder.

Once connected, close the power switch. A small red dot in the two-quadrant area on the monitor shows up, and everything is normal. Opening the window, a breeze blew in, and Zhang Tao turned on the camera function on his mobile phone to the monitor. I went downstairs with a bag of hazelnut mushrooms, and walked about two kilometers into the street before walking back.

When I returned to the rental house, I picked up my mobile phone and watched the video, which showed that when I walked about 1.5 kilometers, the red dot on the monitor disappeared, and the exhaust fumes from cars in the city would interfere, and it was estimated that the number of kilometers would be farther back to the mountains of my hometown.

The mushroom detector is done, use a soldering iron to bake all the solder joints on the instrument, pour out the solution in the glass tank and put it in the canning bottle. The solution can be used several times.

Zhang Tao plans to leave tonight, the mushrooms have already been sold, and it is estimated that the hazelnut will be picked by someone a few days after returning home a few days late. The hazelnut mushroom detector that I researched myself will have to wait for next year.

Wrap the dismantled monitor and digital simulator in a quilt and put them in a large cardboard box. Then carefully put the devices on the table in the cardboard box and put them away, take the pillow and bring out the cotton inside, put the cotton in the gap of the cardboard box, the CPU, memory and U disk in the clothes pocket, and the two cans and bottles with the solution can be carried around.

Send the packed cardboard box to the express air, write that you will pick up the goods yourself, and then pick it up when you get home, and the family will not know what to do with these things when they receive them.

By the way, I went to the agent selling train tickets to buy a train ticket home, although it was 10 yuan more expensive, but it was worth it, and I went to the train station to buy it to save two yuan and may not be able to buy a sleeper.

Go back to the rental house and pack up the things, leave the rest of the pot or something to the landlord, there are still a few days left in the house, but Zhang Tao doesn't care anymore, the landlord doesn't say anything when he returns the house. Let the landlord earn a few more days of money as a reward.

With his schoolbag on his back and his suitcase, Zhang Tao took a bus that ran the whole city for one yuan and came to the train station. The bus in Beijing is very cheap, no matter how many stations you sit are charged one yuan, if the office card is 6 jiao, reflecting the atmosphere of the capital's big brother. Jingjing, I will be back.