Mr. Denjiro's Happy Energy!

3:06

Chainsaw Kickback: The Hidden Danger / Mr. Denjiro's Happy Energy! #856

Shared 4 days ago

317K views

3:06

Heatstroke Prevention: Cooling Rings / Mr. Denjiro's Happy Energy! #855

Mr. Denjiro's Happy Energy!

Shared 1 week ago

121K views

8:20

科学はアートの夢を見るか？/Does science dream of art?

Mr. Denjiro's Happy Energy!

Shared 1 week ago

55K views

3:06

Chain Whip / Mr. Denjiro's Happy Energy! #854

Mr. Denjiro's Happy Energy!

Shared 2 weeks ago

182K views

3:06

Kangaroo Shoes / Mr. Denjiro's Happy Energy! #853

Mr. Denjiro's Happy Energy!

Shared 3 weeks ago

104K views

3:06

Stone Skipping / Mr. Denjiro's Happy Energy! #852

Mr. Denjiro's Happy Energy!

Shared 1 month ago

108K views

3:06

Dust Explosion / Mr. Denjiro's Happy Energy! #851

Mr. Denjiro's Happy Energy!

Shared 1 month ago

461K views

8:20

つめた～い/Sooo cold

Mr. Denjiro's Happy Energy!

Shared 1 month ago

63K views

3:06

Discovering the Nucleus Using Gold! / Mr. Denjiro's Happy Energy! #850

Mr. Denjiro's Happy Energy!

Shared 1 month ago

179K views

3:06

Spiral Pump: A Perpetual Motion Machine?! / Mr. Denjiro's Happy Energy! #849

Mr. Denjiro's Happy Energy!

Shared 1 month ago

573K views

3:06

Foxhole Radio / Mr. Denjiro's Happy Energy! #848

Mr. Denjiro's Happy Energy!

Shared 1 month ago

176K views

3:06

How to Pump a Swing / Mr. Denjiro's Happy Energy! #847

Mr. Denjiro's Happy Energy!

Shared 1 month ago

60K views

3:06

Klein Bottle / Mr. Denjiro's Happy Energy! #846

Mr. Denjiro's Happy Energy!

Shared 2 months ago

1.1M views

3:06

Dancing String / Mr. Denjiro's Happy Energy! #845

Mr. Denjiro's Happy Energy!

Shared 2 months ago

132K views

8:20

楽器は震えている/The instrument is vibrating

Mr. Denjiro's Happy Energy!

Shared 2 months ago

42K views

3:06

Ancient Inca Whistling Vessel / Mr. Denjiro's Happy Energy! #844

Mr. Denjiro's Happy Energy!

Shared 2 months ago

108K views

3:06

The Monkey and the Hunter / Mr. Denjiro's Happy Energy! #843

Mr. Denjiro's Happy Energy!

Shared 2 months ago

67K views

3:06

Staff Sling / Mr. Denjiro's Happy Energy! #842

Mr. Denjiro's Happy Energy!

Shared 3 months ago

67K views

3:06

Plasma / Mr. Denjiro's Happy Energy! #841

Mr. Denjiro's Happy Energy!

Shared 3 months ago

263K views

8:20

Solar power

Mr. Denjiro's Happy Energy!

Shared 3 months ago

55K views

3:06

Morse Code Transmitter / Mr. Denjiro's Happy Energy! #840

Mr. Denjiro's Happy Energy!

Shared 3 months ago

63K views

3:06

The Trajectory of a Cannonball / Mr. Denjiro's Happy Energy! #838

Mr. Denjiro's Happy Energy!

Shared 3 months ago

295K views

3:06

The Vacuum-Packed Human / Mr. Denjiro's Happy Energy! #839

Mr. Denjiro's Happy Energy!

Shared 3 months ago

874K views

3:06

Axe Throwing! / Mr. Denjiro's Happy Energy! #837

Mr. Denjiro's Happy Energy!

Shared 4 months ago

404K views

3:06

Pulleys on a Giant Crane / Mr. Denjiro's Happy Energy! #836

Mr. Denjiro's Happy Energy!

Shared 4 months ago

80K views

8:20

回るとどうなる？/What happens when you turn it?

Mr. Denjiro's Happy Energy!

Shared 4 months ago

96K views

3:06

The Melodica / Mr. Denjiro's Happy Energy! #835

Mr. Denjiro's Happy Energy!

Shared 4 months ago

36K views

3:06

Video Tricks with a Smartphone / Mr. Denjiro's Happy Energy! #834

Mr. Denjiro's Happy Energy!

Shared 4 months ago

23K views

3:06

A Tin Can Telephone World Record! / Mr. Denjiro's Happy Energy! #833 *Audio in EN / GE/ FR/ PT/ ES

Mr. Denjiro's Happy Energy!

Shared 5 months ago

63K views

3:06

How Do Skateboards Move Forward? / Mr. Denjiro's Happy Energy! #832 *Audio in EN / GE / FR / PT / ES

Mr. Denjiro's Happy Energy!

Shared 5 months ago

179K views

8:20

もっと光を！/More light！

Mr. Denjiro's Happy Energy!

Shared 5 months ago

49K views

3:06

Let’s See Cosmic Rays! / Mr. Denjiro’s Happy Energy! #831

Mr. Denjiro's Happy Energy!

Shared 5 months ago

79K views

3:06

Why Boomerangs Always Come Back / Mr. Denjiro’s Happy Energy! #830

Mr. Denjiro's Happy Energy!

Shared 5 months ago

77K views

3:06

Spinning in Midair!: The Cat Righting Reflex / Mr. Denjiro’s Happy Energy! #829

Mr. Denjiro's Happy Energy!

Shared 6 months ago

689K views

3:06

The Mechanism Behind Your Voice / Mr. Denjiro’s Happy Energy! #828

Mr. Denjiro's Happy Energy!

Shared 6 months ago

212K views

8:20

投げてみた/I tried throwing it

Mr. Denjiro's Happy Energy!

Shared 6 months ago

88K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 6 months ago

1.5M views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 6 months ago

365K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 7 months ago

221K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 7 months ago

69K views

8:20

コレの仕組み/How this works

Mr. Denjiro's Happy Energy!

Shared 7 months ago

290K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 7 months ago

461K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 7 months ago

79K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 7 months ago

180K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 8 months ago

105K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 8 months ago

227K views

8:20

レンズ/lens

Mr. Denjiro's Happy Energy!

Shared 8 months ago

52K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 8 months ago

284K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 8 months ago

130K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 9 months ago

338K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 9 months ago

382K views

8:20

エンジン/Engine

Mr. Denjiro's Happy Energy!

Shared 9 months ago

259K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 9 months ago

2.3M views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 9 months ago

536K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 10 months ago

103K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 10 months ago

1M views

8:20

ジャイロ/Gyro

Mr. Denjiro's Happy Energy!

Shared 10 months ago

333K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 10 months ago

151K views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 10 months ago

1.3M views

3:06

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

Mr. Denjiro's Happy Energy!

Shared 10 months ago

208K views