How to make a small invention should be simpler.

See below for the production method:

The first tools we need to prepare are batteries, magnets, and copper coils. Attach a small magnet (both n or s) at the same pole to the positive and negative poles of the battery. Then put this made battery into the copper coil.

At this time, you will find that the battery is constantly shuttling in the copper coil.

Small magnets are the key point of this experiment, they not only produce a magnetic field, but also act as a conductor, so that the copper coil and the positive and negative poles of the battery are connected, even if the current is generated in the copper coil, the energized copper coil generates a magnetic field according to the law of electromagnetic induction and the right-hand rule.

Innovative gadget production method 1, homemade badminton

Prepare materials: 1 empty drink bottle, 2 foam fruit net covers, 1 rubber band, 1 glass marble.

Production process: 1. Take a 250ml empty beverage bottle and cut off the upper part of the bottle;

2.Divide the cut part into 8 equal parts, cut it to the neck of the neck with scissors, and then cut each part into the shape of petals of the same size;

3.Put the foam fruit net sleeve on the outside of the bottle and fix it at the mouth of the bottle with a rubber band;

4.Wrap another foamed fruit net around a glass marble, stuff it into the mouth of the bottle, plug it tightly and expose about 1 cm;

5.Cut off half of the ping pong ball, cover the bottom of the hemisphere on the mouth of the bottle, cut the four sides into a whisker, cover the mouth of the bottle and fix it with a rubber band.

6.After beautification and retouching, a homemade shuttlecock was completed. Hit a dozen with a badminton racket and see how it goes?

2. Homemade soap paper.

Materials and tools for crafting:

Hygroscopic white paper, small pieces of soap, a brush and disposable beverage cans.

Production method: first chop the soap and put it in the jar, put the cup on the stove after filling the appropriate amount of water, wait for the soap to melt, cut the white paper into the size of a matchbox, apply the soap liquid one by one, and then take it out to dry it to become soap paper.

3. Homemade hot air balloons.

1.First of all, we cut 6 to 8 leaf-shaped pieces of paper out of soft paper.

2.Fold them in half and glue their edges together to make a balloon.

3.Tape the four wires to the bottom of the balloon. Attach the other end of the thread to the table with plasticine.

4.Try to turn the speed of the hair dryer as slowly as possible. Aim the blower up at the bottom opening and turn the switch on. The balloon will slowly grow larger, tighten the string, and leave the table.

4. Homemade flashlight.

The specific method of making it is to remove one end of the lid of a waste can (such as a Lulu beverage can) and knock the other end with a round hammer. Roll up two No. 1 batteries with thick corrugated cardboard and put them into the tank with the positive electrode facing up and the negative electrode facing down.

Find a suitable plastic lid (such as a magic big roll lid that can be fastened to Lulu cans) and dig a small circular hole in the lid** in such a size that the bulb is plugged in tightly. Insert the base of the bulb into the small hole. Take a piece of hunt and peel off the skin at both ends, and wrap one end around the lampholder.

The other end is pierced through a small hole through the side of the plastic cover. Place the plastic lid over the can. Check that the bulb and battery are in close contact.

At this point, the disposable flashlight is ready. When using, use your thumb to press the wire threaded from the side wall on the weld that is not painted from the can, the flashlight will glow, and the thumb will jump off the wire, and the flashlight will go out, which is very convenient to use.