結果 : two uses of ultraviolet light
8:02

ULTRAVIOLET RAYS | How Harmful Are UV Rays? | Ultraviolet Radiation | Dr Binocs Show | Peekaboo Kidz

Peekaboo Kidz
772,880 回視聴 - 4 年前
7:29

How to know if a UVC device will be safe and effective

CNET
151,309 回視聴 - 3 年前
7:44

UV light kills viruses. Why isn't it everywhere?

Vox
1,203,067 回視聴 - 7 か月前
7:01

2 Things You Must Know Before Buying A UV Light

Nightwalker Gear
87,648 回視聴 - 3 年前
1:58

Ultraviolet (UV) Can Kill Bacteria & Viruses – Learn The Basics

Bulbs.com
127,877 回視聴 - 4 年前
3:03

Testing UV disinfecting lights

KPRC 2 Click2Houston
114,810 回視聴 - 3 年前
11:13

The World in UV

Veritasium
5,378,790 回視聴 - 6 年前
1:16

The dangers of UV on our health

UK Health Security Agency
19,539 回視聴 - 8 年前
18:02

Visible Light: The Astonishing Power of What We See

iitutor.com
191 回視聴 - 1 日前

-
1:31

How A UV (Ultra Violet Light) System Works

UV Pools
37,161 回視聴 - 11 年前
9:45

UV Light - Demos & Experiments - AAPT Films

James Lincoln
159,695 回視聴 - 10 年前
1:19

What is UV and how does it affect us?

Met Office - Learn About Weather
99,412 回視聴 - 7 年前
2:26

What are the uses of X-ray, ultraviolet ray and infrared ray?

Doubtnut
11,590 回視聴 - 4 年前
0:42

Sunscreen vs UV light

NileRed
4,385,924 回視聴 - 2 年前
2:27

How to tell if UV light is working

Regency Supply (Regency Lighting)
84,309 回視聴 - 4 年前
8:06

Scanning an Airbnb With a UV Light - What Is This Thing?

Going Gear
17,391 回視聴 - 2 年前
1:00

蛍光でUVカットを観察してみる2 #science #ずんだもん

cho45
6,465 回視聴 - 4 日前
3:21

Shining Light on the Evidence

Smithsonian Channel
50,630 回視聴 - 12 年前
2:40

How UV Light Works

Dana Lee
221,721 回視聴 - 12 年前
11:38

How Ultraviolet Radiation Affects Plants with Dr. Bruce Bugbee

Apogee Instruments Inc.
64,558 回視聴 - 3 年前