The wonderful world of platinum, how the earliest lighters worked!
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The wonderful world of platinum, how the earliest lighters worked!
23:16
自制驱狗神器！
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自制驱狗神器！
0:35
自制夜视仪
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自制夜视仪
0:16
红外光对部分油墨的穿透性
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红外光对部分油墨的穿透性
0:16
血红蛋对红外光的吸收
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血红蛋对红外光的吸收
0:11
遥控器红外光
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遥控器红外光
0:17
红外摄影
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红外摄影
0:12
模拟人造闪电
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模拟人造闪电
0:36
静电动力系统！
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静电动力系统！
0:26
静电除尘效果居然如此优异！
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静电除尘效果居然如此优异！
0:56
简易离子推进器！
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简易离子推进器！
0:26
不同材料和结构发出的声音也不一样！
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不同材料和结构发出的声音也不一样！
0:24
什么是声音的共振频率吗
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什么是声音的共振频率吗
0:38
年轻人应该很少知道这种灯！
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年轻人应该很少知道这种灯！
0:52
石灰灯是早期重要的照明工具！
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石灰灯是早期重要的照明工具！
0:45
遇水可燃烧的石头！
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遇水可燃烧的石头！
0:19
铅酸电池 #science #diy
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铅酸电池 #science #diy
0:36
铜锌原电池#diy
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铜锌原电池#diy
0:20
伏打电堆！ #science #diy
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伏打电堆！ #science #diy
0:17
自制白炽灯！ #science #diy
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自制白炽灯！ #science #diy
0:53
比白炽灯还早的电力照明工具！#diy
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比白炽灯还早的电力照明工具！#diy
0:27
自制一个简单的莱顿瓶
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自制一个简单的莱顿瓶
0:23
有人使用过这种刀具吗？
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有人使用过这种刀具吗？
0:22
投影观日法
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投影观日法
0:18
How to Make a Metal Fuel Cell
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How to Make a Metal Fuel Cell
15:53
How to Gold Plate Your Phone
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How to Gold Plate Your Phone
12:13
How to Make Your Own Plating Bath and Plating Metal at Home
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How to Make Your Own Plating Bath and Plating Metal at Home
10:25
How to make a simple cold welding machine!
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How to make a simple cold welding machine!
21:12
Under what circumstances is electricity dangerous?
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Under what circumstances is electricity dangerous?
9:45
What is the principle of induction heating
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What is the principle of induction heating
8:18
Electric arc furnaces are the hottest type of furnaces
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Electric arc furnaces are the hottest type of furnaces
9:42
The most expensive solar power generation, how efficient is it?
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The most expensive solar power generation, how efficient is it?
4:31
How lasers are produced and how to make laser devices
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How lasers are produced and how to make laser devices
7:45
Try to make a directional sound wave device
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Try to make a directional sound wave device
5:06
What is a supercapacitor and how is it different from a battery
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What is a supercapacitor and how is it different from a battery
8:07
走近紅外線的奇妙世界，便宜的夜視儀方案！
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走近紅外線的奇妙世界，便宜的夜視儀方案！
8:12
收音機加計算器，真的能做成金屬探測器麼？
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收音機加計算器，真的能做成金屬探測器麼？
11:09
马克思发生器是什么，为何它能制造人工闪电！
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马克思发生器是什么，为何它能制造人工闪电！
7:14
如何製造簡易的離子推進器！
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如何製造簡易的離子推進器！
6:05
鳴笛喇叭與普通喇叭有何區別，用來聽歌會什麼效果！
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鳴笛喇叭與普通喇叭有何區別，用來聽歌會什麼效果！
7:53
The magical stone that is combustible in contact with water
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The magical stone that is combustible in contact with water
7:38
How to make an ultra-high temperature hydrogen-oxygen flame device!
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How to make an ultra-high temperature hydrogen-oxygen flame device!
9:32
The cheapest electric welding machine, built with salt water!
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The cheapest electric welding machine, built with salt water!
7:07
自然界最硬的物質，金剛石遇到高溫和錘擊會怎麼樣！
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自然界最硬的物質，金剛石遇到高溫和錘擊會怎麼樣！
8:05
最早出現的電池是什麼，能為現在的電子產品供電嗎？
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最早出現的電池是什麼，能為現在的電子產品供電嗎？
8:16
Electric lighting fixtures older than incandescent bulbs!
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Electric lighting fixtures older than incandescent bulbs!
8:11
Store Electricity | The Oldest Capacitor!
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Store Electricity | The Oldest Capacitor!
5:28
Who is the harder ceramic knife or steel knife?
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Who is the harder ceramic knife or steel knife?
3:48
How dangerous it is when the telescope is pointed at the sun
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How dangerous it is when the telescope is pointed at the sun
4:33
How high is the focus temperature under the sun？
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How high is the focus temperature under the sun？
5:23