FREE TIME G

16:43

Using aluminum to generate electricity，Aluminum air battery！

0:19

Electrostatic propulsion system！

0:27

Electrostatic dust removal

0:14

Ion thrusters！

0:15

The difference in timbre between different materials！

0:20

Do you know what resonant frequency is?

0:28

Do you know gas lamps?

0:28

limelight！lime light!

0:14

Calcium Carbide！

0:36

Lead-acid batteries #science #diy

0:20

Copper-zinc salt water Primary battery #science #diy

0:17

Homemade Voltaic Pile #science #diy

0:53

Homemade Incandescent Lamp # #science #diy

0:27

Carbon Arc Lamp#diy #science

0:23

DIY Leyden jar

0:22

This knife is interesting

0:18

Viewing the Sun with a Telescope #shorts #telescope #sun

6:45

I made my own pulse welder and the welding effect is pretty good!

5:12

I have to make a large current generator

6:06

What metals can a $20 ZVS induction furnace melt?

5:38

Making a 3000℃ electric arc furnace

4:12

Expensive gallium arsenide solar cells!

4:11

Homemade solid state laser！

6:25

What can a 60,000 Farad capacitor be used for ？

7:04

How to turn your phone into a night vision device

4:15

How to Make Artificial Lightning，Marx generator！

4:03

do you know what an ion engine is？Ion-propelled aircraft！

2:08

do you know resonance speakers？

2:30

The effect of metal film speakers

1:42

Play music with this horn

1:35

Most people don't know what lamp this is

1:52

Early people used lime to make spotlights

2:03

Carbide lamp is an extremely dangerous lamp

6:29

How to make a high temperature flame

1:13

How to Make a Lead Acid Battery

1:09

How to make a battery out of salt water

0:42

The earliest battery, the Voltaic pile!

1:35

bottle that collects electricity

1:40

I'm going to see what the sun looks like with a telescope