In fact, generators and electric motors are a reversible process. For example, if you connect a regular motor (the kind I played with with four-wheel drive vehicles when I was a kid) to a small light bulb and quickly turn it on. That's enough, the little light bulb lights up. I tried it. Of course, this can be done directly by hand. The dial wasn't fast enough, so I had to move it across the table.
I don't know if the working principle of the fan motor is exactly the same as that of the motor. I don't know if it is a three phase motor. . . Regardless, the engine runs. . . . . . . It's just that the power is too low and it's completely useless. . . .
Experimental essay “Energy production from fruits and vegetables” of 600 words (6th grade level)
Bernoulli's law is the most important formula in aerodynamics. Simply put, the fasterse of the plane is great. fluid, the greater the speed of the fluid. The lower the static pressure, the smaller the speed and the higher the static pressure. Fluid here usually refers to air or water. Just put two pieces of paper side by side in the air. and blow air into the middle of the two pieces of paper. You can also make your own non-Newtonian fluids. You can buy a microscope for your child. I actually thought about chemical experiments, but after thinking about it, I forgot it. After all, most chemical experiments are risky. However, you can use magnets, copper coils and small light bulbs to make hand generators for your children using the principle of electromagnetic induction, and you don't have to worry too much about your children being affected by electricity. You can also create a bow yourselfn-sky under the sun, just take the spray and spray water under the sun.
Fruits are an indispensable element in our lives. There are many types of fruits, such as apples, bananas, pears, grapes... They are all rich in nutrients. However, they also have a particular purpose: to produce electricity.
This morning, I was worried about my thesis. Seeing that time was passing minute by second, I still had no idea, and scratched my head and head anxiously. Seeing that I was so anxious, my mother brought me some fruit to eat. Looking at these fruits, my eyes suddenly lit up and I remembered an experiment in which the fruits produced electricity mentioned in a previous science book. I was delighted and quickly prepared the experimental supplies.
I brought three lemons (maybe other fruits), a fruit knife, a smallbulb and wires connected to copper and zinc sheets.
First, turn all the lemons over and squeeze them, turning them until they are soft. This will allow all the juice from the pulp of the lemon to come out and also for the lemon bulb to function better.
Secondly, use a fruit knife to cut two small slits 1 cm long on 1/3 of one side of each lemon, put the copper foil and the leaf there respectively zinc, and put one of the copper pieces on the lemon is connected to the zinc piece on the other lemon, but the ends are not connected. Finally, connect both ends of the wires to the positive and negative terminals of the bulb.
"Yeah, yeah, my light is on!" I saw the little light bulb lit and I couldn't help but applaud. The “Fruit Bulb” experiment was a success!
But why do fruits produce electricity? After beforeAfter looking for information, I understood: lemons do not produce electricity. The reason they produce electricity is due to the galvanic effect of two metals in the acid! It turns out that lemon is a juicy fruit rich in citric acid.At both ends of the spacer, two metal conductors with large differences in activity are inserted, such as silver-iron, copper-iron, aluminum-iron or copper-zinc, etc. When the two ends of the conductor are connected to form a loop, the two metals The electrolysis reaction in the acid will generate current in the circuit, which is its galvanic reaction. Not only lemons, but also fruits with fruit acid, amylase and pH.
Oh that's it, it looks like fruit can also be used instead of batteries! After this experience, I understood many scientific principles and the vastness of the scientific field. In the future, Ithem explore science more!