How do plants produce electricity?

In 1918, British watchmaker Tony Ehill conducted an experiment. He inserted two electrodes into a lemon, using a copper coin on one side and a zinc wire on the other, and connected the lemon to the circuit of an electric motor on a small clock.

An interesting thing happened: the hands of the clock started moving, as if it were connected to a power source. Incredibly, this little lemon kept the watch running for 5 months. This experiment confirmed to people that plants contain considerable energy and can be used to generate electricity. This discovery amounts to injecting stimulants into the scientific community which is doing everything possible to find new sources of energy. Many scientists were enlightened and encouraged by this and devoted themselves to this meaningful research.

Somo Jay, professor at the University of California, believes that the extractionIndustrial production of hydrogen and oxygen from water uses a lot of electricity and plants can break down water into hydrogen and oxygen through photosynthesis. If you simulate green leaves and create an “artificial green leaf” that can use solar energy, it will be equivalent to building a power station. To prove this, Somoje also conducted a series of experiments. He mixed iron oxide powder with magnesium and silicon respectively to make "PN" type semiconductor junction plates as catalytic plates, and then immersed them in a conductive sodium sulfate solution. Under sunlight, an electric current is generated at both levels of the disk and begins to split the water into hydrogen and oxygen. The biggest obstacle to this experiment is the oxidation problem. The iron oxide on the magnesium-doped disk gradually transformed into ferrous oxide after 8 hours, thus reducing and eventually losing its catalytic effect. There is therefore still a long way to go between this simple experiment and its practical application.

Biochemists at Ohio State University in the United States used biochemical techniques to conduct more complex experiments. They first separated intact chloroplasts from plant tissues, then covered them with tiny filter membranes, which they used to separate two solutions: one containing electron-releasing chemicals and the other containing an electron acceptor. 'electrons. When light passes through the electron acceptor solution on the chloroplast, electrons pass from the solution that releases electrons through the chloroplast to the electron acceptor solution. However, in actual operation, the researchers found that, based on the surface area of ​​chloroplasts covering the film, only about 3% of the lumin energyIt can be immediately converted into electrical energy. This figure is obviously too unsatisfactory, because in theory the electricity produced by the power plants should be much higher than this.

Although research on power generation in power plants faces many difficulties, people have not given up on it. First of all, the energy of plants is inexhaustible; second, they have more obvious advantages than photovoltaic cells. In today's world where energy is scarce, the production of electricity by power plants offers broad prospects.

What does AC DC mean in electrical appliances?

To be precise, it does not require electricity, but it does not require an external power supply or battery. You said that it can display the bath water temperature in real time because it uses the principle of hydroelectric self-generation. There is a motor built into the shower headas long as the water pressure and flow are normal, after the water. is turned on, it can generate electricity and supply it to the LED screen to display the water temperature in real time.

What is the symbol for direct current?

In electrical appliances, AC means alternating current and DC means direct current.

Direct current, English Direct Current, called DC, constant current is a type of direct current, which is a direct current that does not change its size and direction. Alternating current, called AC, refers to alternating current whose current direction changes periodically with time and whose average operating value within a cycle is zero.

DC energy sources include chemical batteries, fuel cells, thermoelectric batteries, solar cells, DC generators, etc. Using direct current, water electrolysis experiments can also be performedalways be carried out. When the electrode is inserted into water, the negative electrode can electrolyze water into hydrogen and the positive electrode can electrolyze water into oxygen.

Alternators typically use a rotating field design with a stationary armature, which eliminates the need for brushes and slip rings to consume power.

Reference materials: