Boris Petrov

1:27

Wire Expanding by Electric Current

Boris Petrov

Shared 6 years ago

1K views

1:28

Compression and Expansion of Air

Boris Petrov

Shared 6 years ago

607 views

1:26

Ice Calorimeter

Boris Petrov

Shared 6 years ago

1K views

0:35

Fire Piston

Boris Petrov

Shared 6 years ago

353 views

0:15

Gold Panning at Pine Creek

Boris Petrov

Shared 8 years ago

3K views

17:30

Nitric Acid

Boris Petrov

Shared 9 years ago

3.8K views

2:23

The Cheapest Way Of Getting Sulfuric Acid

Boris Petrov

Shared 9 years ago

10K views

5:13

Melting Gold with Faithfull Workmate Torch

Boris Petrov

Shared 9 years ago

3.8K views

6:03

My Advice For Every Beginner Gold Refiner

Boris Petrov

Shared 9 years ago

10K views

10:17

Electrons

Boris Petrov

Shared 9 years ago

820 views

2:17

Another Gold Melting Tip

Boris Petrov

Shared 9 years ago

10K views

14:14

Preparation of Oxygen - Seven Demonstrations

Boris Petrov

Shared 9 years ago

3.5K views

9:28

How to Get Rid of Crows

Boris Petrov

Shared 9 years ago

149K views

3:19

Осаждение Золота Аскорбиновой Кислотой

Boris Petrov

Shared 9 years ago

64K views

3:19

Gold Precipitation From Aqua Regia Using Ascorbic Acid

Boris Petrov

Shared 9 years ago

41K views

1:19

Golden Blizzard

Boris Petrov

Shared 9 years ago

2.3K views

1:10

Ducks Synchronised Swimming

Boris Petrov

Shared 9 years ago

943 views

10:34

Silver Recovery from Compact Discs

Boris Petrov

Shared 9 years ago

1.1M views

5:16

Silver Nitrate Reaction With Iron Sulfate And Sodium Chloride.

Boris Petrov

Shared 9 years ago

12K views

3:23

Preprocessing Chips For Gold Extraction

Boris Petrov

Shared 9 years ago

8K views

3:38

Melting Gold with Go System MT2055H Fine Flame Tech Torch

Boris Petrov

Shared 9 years ago

9.4K views

3:27

Gold Recovery From Gold Plated Bracelets - The First Part

Boris Petrov

Shared 9 years ago

78K views

2:10

Silver Chloride Reduction By The Action of Light

Boris Petrov

Shared 9 years ago

18K views

3:01

Identifying Fake Gold Plating

Boris Petrov

Shared 9 years ago

5.6K views

5:51

Scrapping Hard Drive For Gold, Palladium and Platinum

Boris Petrov

Shared 9 years ago

176K views

5:04

Золото, платина и палладий из жёстких дисков

Boris Petrov

Shared 9 years ago

382K views

7:55

Gold Recovery From Computer Gold Plated Pins - One Of My Own Methods

Boris Petrov

Shared 9 years ago

9.2K views

8:53

Золото из импортных радиодеталей - Что собирать?

Boris Petrov

Shared 9 years ago

65K views

10:54

Золото из компьютера - выгодно ли?

Boris Petrov

Shared 9 years ago

93K views

36:31

Плавка серебра китайской горелкой

Boris Petrov

Shared 9 years ago

119K views

6:51

Снятие лакового покрытия с печатных плат

Boris Petrov

Shared 9 years ago

97K views

2:06

Chinese pencil torch review

Boris Petrov

Shared 9 years ago

2.6K views

3:46

Prospecting for placer gold in Gilbert, Nevada - 1927

Boris Petrov

Shared 9 years ago

1.6K views

12:46

Полное осаждение хлорида серебра

Boris Petrov

Shared 9 years ago

60K views

5:11

Золото из спутниковой тарелки

Boris Petrov

Shared 9 years ago

22K views

3:52

Silver Chloride Precipitation

Boris Petrov

Shared 9 years ago

18K views

16:31

Золото из золота, а не из компютера, мобильного телефона или камня )

Boris Petrov

Shared 9 years ago

13K views

3:32

Осаждение золота железным купоросом

Boris Petrov

Shared 9 years ago

43K views

2:32

Hofmann voltameter - Electrolysis of water

Boris Petrov

Shared 9 years ago

3.3K views

22:35

Gold Paydirt Explained

Boris Petrov

Shared 9 years ago

1K views

9:28

ОПАСНО СЕРОВОДОРОД!

Boris Petrov

Shared 9 years ago

30K views

13:28

Identifying Hydrogen Sulfide - H2S - Safety video

Boris Petrov

Shared 9 years ago

91K views

4:09

Filtartion Tips

Boris Petrov

Shared 9 years ago

1.1K views

8:37

GOLD RECOVERY USING HOUSEHOLD CHEMICALS

Boris Petrov

Shared 9 years ago

65K views

5:11

Gold Recovery from Satellite Dish (LNB)

Boris Petrov

Shared 9 years ago

51K views

16:31

Dissolving Gold in Poor Man's Aqua Regia

Boris Petrov

Shared 9 years ago

116K views

9:29

PRECIOUS METAL RECOVERY FROM LCD TV

Boris Petrov

Shared 9 years ago

28K views

4:57

Gold Recovery Bullion Bar Melted Drop Scrap Plated Computer Pins Scam

Boris Petrov

Shared 9 years ago

19K views

2:39

Iron sulfate in gold precipitation

Boris Petrov

Shared 9 years ago

27K views

3:44

Microwave Gold or Silver Melting Furnace

Boris Petrov

Shared 9 years ago

6K views

5:40

CHOOSING GOLD ELECTRICAL MELTING FURNACE

Boris Petrov

Shared 9 years ago

1.8K views

1:02

Gold Recovery from Commoned Resistor Network Array

Boris Petrov

Shared 9 years ago

3.3K views

2:08

Gold precipitation mistakes using SMB

Boris Petrov

Shared 9 years ago

78K views

2:30

Gold precipitation mistakes

Boris Petrov

Shared 9 years ago

47K views

2:30

Ошибки при осаждении золота

Boris Petrov

Shared 9 years ago

146K views

6:00

Gold Precipitation Using Sodium Metabisulfite (SMB).

Boris Petrov

Shared 9 years ago

20K views

3:24

Making а Heat-Resistant Beaker from Jam Jar

Boris Petrov

Shared 9 years ago

13K views

6:11

Gold Recovery From IC Chips

Boris Petrov

Shared 9 years ago

279K views

6:11

Золото из микросхем

Boris Petrov

Shared 10 years ago

111K views

5:49

Аффинаж золота при помощи уксуса

Boris Petrov

Shared 10 years ago

176K views