Mr. Denjiro's Happy Energy!

3:06

Hard Steel’s Weakness / Mr. Denjiro’s Happy Energy! #827

Shared 17 hours ago

140K views

3:06

Japanese Martial Arts: Kusarigama / Mr. Denjiro’s Happy Energy! #826

Mr. Denjiro's Happy Energy!

Shared 1 week ago

238K views

3:06

Synchronization in Our Daily Lives / Mr. Denjiro’s Happy Energy! #825

Mr. Denjiro's Happy Energy!

Shared 2 weeks ago

141K views

3:06

A Charcoal Phone?!: The Carbon Microphone / Mr. Denjiro's Happy Energy! #824

Mr. Denjiro's Happy Energy!

Shared 3 weeks ago

55K views

8:20

コレの仕組み/How this works

Mr. Denjiro's Happy Energy!

Shared 3 weeks ago

187K views

3:06

Jumping from Up High with Just a Stick?! / Mr. Denjiro's Happy Energy! #823

Mr. Denjiro's Happy Energy!

Shared 4 weeks ago

395K views

3:06

Gravity on the Moon: Leaping High / Mr. Denjiro's Happy Energy! #822

Mr. Denjiro's Happy Energy!

Shared 4 weeks ago

63K views

3:06

Archimedes' Heat Ray / Mr. Denjiro's Happy Energy! #821

Mr. Denjiro's Happy Energy!

Shared 4 weeks ago

160K views

3:06

How to Start a Fire / Mr. Denjiro's Happy Energy! #820

Mr. Denjiro's Happy Energy!

Shared 4 weeks ago

92K views

3:06

Optical Illusions to Trick Your Brain! / Mr. Denjiro's Happy Energy! #819

Mr. Denjiro's Happy Energy!

Shared 4 weeks ago

186K views

8:20

レンズ/lens

Mr. Denjiro's Happy Energy!

Shared 4 weeks ago

46K views

3:06

How to Throw Playing Cards! / Mr. Denjiro's Happy Energy! #818

Mr. Denjiro's Happy Energy!

Shared 1 month ago

241K views

3:06

Liquid Nitrogen Rocket / Mr. Denjiro's Happy Energy! #817

Mr. Denjiro's Happy Energy!

Shared 1 month ago

115K views

3:06

How a Trumpet Produces Sound / Mr. Denjiro's Happy Energy! #816

Mr. Denjiro's Happy Energy!

Shared 1 month ago

241K views

3:06

A Railgun?! The Accelerating Ball / Mr. Denjiro's Happy Energy! #815

Mr. Denjiro's Happy Energy!

Shared 1 month ago

258K views

8:20

エンジン/Engine

Mr. Denjiro's Happy Energy!

Shared 1 month ago

132K views

3:06

Cries of the Dead: The Death Whistle / Mr. Denjiro's Happy Energy! #814

Mr. Denjiro's Happy Energy!

Shared 3 months ago

1.8M views

3:06

Ancient Weapon: The Boomerang / Mr. Denjiro's Happy Energy! #813

Mr. Denjiro's Happy Energy!

Shared 3 months ago

472K views

3:06

Generating Electricity with Potential Energy?! / Mr. Denjiro's Happy Energy! #812

Mr. Denjiro's Happy Energy!

Shared 3 months ago

97K views

3:06

Why Does an Achilles Tendon Tear? / Mr. Denjiro's Happy Energy! #811

Mr. Denjiro's Happy Energy!

Shared 3 months ago

548K views

8:20

ジャイロ/Gyro

Mr. Denjiro's Happy Energy!

Shared 3 months ago

198K views

3:06

Is That Floating in Air?: Tensegrity / Mr. Denjiro's Happy Energy! #810

Mr. Denjiro's Happy Energy!

Shared 3 months ago

128K views

3:06

The Science Behind Home Runs / Mr. Denjiro's Happy Energy! #809

Mr. Denjiro's Happy Energy!

Shared 4 months ago

847K views

3:06

Throwing Shuriken! / Mr. Denjiro's Happy Energy! #808

Mr. Denjiro's Happy Energy!

Shared 4 months ago

168K views

3:06

The Air Engine / Mr. Denjiro's Happy Energy! #807

Mr. Denjiro's Happy Energy!

Shared 4 months ago

81K views

3:06

How to Make a Clean Cut on a Bottle / Mr. Denjiro's Happy Energy! #806

Mr. Denjiro's Happy Energy!

Shared 4 months ago

349K views

8:20

古代の武器②/Ancient Weapons

Mr. Denjiro's Happy Energy!

Shared 4 months ago

102K views

3:06

Why We Can't See the Far Side of the Moon / Mr. Denjiro's Happy Energy! #805

Mr. Denjiro's Happy Energy!

Shared 5 months ago

98K views

3:06

The Mechanism behind a Siren / Mr. Denjiro's Happy Energy! #804

Mr. Denjiro's Happy Energy!

Shared 5 months ago

266K views

3:01

The Law of Increasing Entropy / Mr. Denjiro's Happy Energy! #803

Mr. Denjiro's Happy Energy!

Shared 5 months ago

521K views

3:01

Making a Thermometer / Mr. Denjiro's Happy Energy! #802

Mr. Denjiro's Happy Energy!

Shared 5 months ago

90K views

8:20

静電気はふしぎ/ Static electricity is mystery

Mr. Denjiro's Happy Energy!

Shared 5 months ago

50K views

3:01

The Geiger Counter / Mr. Denjiro's Happy Energy! #801

Mr. Denjiro's Happy Energy!

Shared 6 months ago

421K views

3:01

Vacuum-Insulated Cups / Mr. Denjiro's Happy Energy! #800

Mr. Denjiro's Happy Energy!

Shared 6 months ago

116K views

3:01

Atlatl: A Weapon of Ancient Times / Mr. Denjiro's Happy Energy! #799

Mr. Denjiro's Happy Energy!

Shared 6 months ago

1.6M views

3:01

The Magic of the Will-O'-the-Wisp / Mr. Denjiro's Happy Energy! #798

Mr. Denjiro's Happy Energy!

Shared 6 months ago

182K views

8:20

家で簡単実験②/Experiments you can do at home

Mr. Denjiro's Happy Energy!

Shared 6 months ago

52K views

3:01

Sunburn and UV Radiation / Mr. Denjiro's Happy Energy! #797

Mr. Denjiro's Happy Energy!

Shared 6 months ago

192K views

3:01

Stone on Stone: Starting a Fire / Mr. Denjiro's Happy Energy! #796

Mr. Denjiro's Happy Energy!

Shared 7 months ago

119K views

8:20

風船の科学/The Science of Balloons

Mr. Denjiro's Happy Energy!

Shared 7 months ago

71K views

3:01

Water Vapor Explosion / Mr. Denjiro's Happy Energy! #795

Mr. Denjiro's Happy Energy!

Shared 7 months ago

1.3M views

3:01

How Cassette Tapes Work / Mr. Denjiro's Happy Energy! #794

Mr. Denjiro's Happy Energy!

Shared 7 months ago

113K views

8:20

ゴムは面白い/Rubber is interesting

Mr. Denjiro's Happy Energy!

Shared 7 months ago

187K views

3:01

Ballista: The Ancient Weapon / Mr. Denjiro's Happy Energy! #793

Mr. Denjiro's Happy Energy!

Shared 7 months ago

691K views

3:01

The Science behind Water Repellency / Mr. Denjiro's Happy Energy! #792

Mr. Denjiro's Happy Energy!

Shared 8 months ago

190K views

8:20

科学クッキング/science cooking

Mr. Denjiro's Happy Energy!

Shared 8 months ago

153K views

3:01

Boom! The Thermite Reaction / Mr. Denjiro's Happy Energy! #791

Mr. Denjiro's Happy Energy!

Shared 8 months ago

395K views

3:01

Fly Straight with the Gyroscopic Effect! / Mr. Denjiro's Happy Energy! #790

Mr. Denjiro's Happy Energy!

Shared 8 months ago

296K views

8:08

科学マジック/science magic

Mr. Denjiro's Happy Energy!

Shared 8 months ago

57K views

3:01

Start a Fire like the Iceman / Mr. Denjiro's Happy Energy! #789

Mr. Denjiro's Happy Energy!

Shared 8 months ago

222K views

3:01

Casts and Cast Saws / Mr. Denjiro's Happy Energy! #788

Mr. Denjiro's Happy Energy!

Shared 9 months ago

669K views

8:20

遊びの科学/science of play

Mr. Denjiro's Happy Energy!

Shared 9 months ago

58K views

3:01

Bolas: An Ancient Weapon / Mr. Denjiro's Happy Energy! #787

Mr. Denjiro's Happy Energy!

Shared 9 months ago

1.6M views

3:01

Sewing Machines that Operate Needles and Threads / Mr. Denjiro's Happy Energy! #786

Mr. Denjiro's Happy Energy!

Shared 9 months ago

86K views

8:20

水のチカラ/The Power of Water

Mr. Denjiro's Happy Energy!

Shared 9 months ago

181K views

3:01

Cooking with Mr. Denjiro! Electric Bread/ Mr. Denjiro's Happy Energy! #785

Mr. Denjiro's Happy Energy!

Shared 9 months ago

109K views

3:01

石の中の結晶！ジオード／ Geodes: Rocks with Crystals Inside

Mr. Denjiro's Happy Energy!

Shared 9 months ago

156K views

8:20

磁力のパワー/Power of magnetism

Mr. Denjiro's Happy Energy!

Shared 9 months ago

126K views

3:01

The Principles of Buoyancy / Mr. Denjiro's Happy Energy! #783

Mr. Denjiro's Happy Energy!

Shared 10 months ago

167K views

3:01

Screws and Matchlocks / Mr. Denjiro's Happy Energy! #782

Mr. Denjiro's Happy Energy!

Shared 10 months ago

1M views