Zibaldone online

di Annarita http://www.wikio.it

http://www.wikio.it

www.flickr.com

Italian Blogs for Darfur

BlogItalia.it - La directory italiana dei blog

I miei blog didattici

Scientificando

Matematic@Mente

Il mio blog sul web 2.0

Web 2.0 and something else

22nd Agosto 2014

Foto rebloggato da TED-Ed - Gifs worth sharing con 5.387 note

teded:

Did you know fireworks were originally used to chase away evil spirits?
From the TED-Ed Lesson The deadly irony of gunpowder - Eric Rosado
Animation by Zedem Media

teded:

Did you know fireworks were originally used to chase away evil spirits?

From the TED-Ed Lesson The deadly irony of gunpowder - Eric Rosado

Animation by Zedem Media

22nd Agosto 2014

Fotoset rebloggato da TED-Ed - Gifs worth sharing con 3.686 note

teded:

A Guide to the Energy of the Earth

Energy moves in and out of Earth’s physical systems, and during any energy transfer between them, some energy is lost to the surroundings as heat, light, sound, vibration, or movement.

Our planet’s energy comes from internal and external sources. Geothermal energy from radioactive isotopes and rotational energy from the spinning of the Earth are internal sources of energy, while the Sun is the major external source, driving certain systems, like our weather and our climate.

Sunlight warms the surface and atmosphere in varying amounts, and this causes convection, producing winds and influencing ocean currents. Infrared radiation, radiating out from the warmed surface of the Earth, gets trapped by greenhouse gases and further affects the energy flow.

From the TED-Ed Lesson A guide to the energy of the Earth - Joshua M. Sneideman

Animation by Marc Christoforidis

22nd Agosto 2014

Foto rebloggato da TED-Ed - Gifs worth sharing con 328 note

teded:

Energy is all around us, a physical quantity that follows precise natural laws. Our universe has a finite amount of it; it’s neither created nor destroyed but can take different forms, such as kinetic or potential energy, with different properties and formulas to remember.
From the TED-Ed Lesson A guide to the energy of the Earth - Joshua M. Sneideman
Animation by Marc Christoforidis

teded:

Energy is all around us, a physical quantity that follows precise natural laws. Our universe has a finite amount of it; it’s neither created nor destroyed but can take different forms, such as kinetic or potential energy, with different properties and formulas to remember.

From the TED-Ed Lesson A guide to the energy of the Earth - Joshua M. Sneideman

Animation by Marc Christoforidis

22nd Agosto 2014

Foto rebloggato da Tales of Science and Love con 3.070 note

talesofscienceandlove:

trigonometry-is-my-bitch:

 An Isochrone curve is the curve for which the time taken by an object sliding without friction in uniform gravity to its lowest point is independent of its starting point. The curve is a cycloid, and the time is equal to π times the square root of the radius over the acceleration of gravity.
- A ball set on an Isocrone (or Tautochrone) curve will reach the bottom at the same length of time no matter where you place the ball, so long as there is no impeding friction.
[Gif] - Four balls slide down a cycloid curve from different positions, but they arrive at the bottom at the same time. The blue arrows show the points’ acceleration along the curve. On the top is the time-position diagram.
[source]

Wow, this doesnt make a lick of common sense! Gotta love physics, lol

talesofscienceandlove:

trigonometry-is-my-bitch:

 An Isochrone curve is the curve for which the time taken by an object sliding without friction in uniform gravity to its lowest point is independent of its starting point. The curve is a cycloid, and the time is equal to π times the square root of the radius over the acceleration of gravity.

- A ball set on an Isocrone (or Tautochrone) curve will reach the bottom at the same length of time no matter where you place the ball, so long as there is no impeding friction.

[Gif] - Four balls slide down a cycloid curve from different positions, but they arrive at the bottom at the same time. The blue arrows show the points’ acceleration along the curve. On the top is the time-position diagram.

[source]

Wow, this doesnt make a lick of common sense! Gotta love physics, lol

Fonte: trigonometry-is-my-bitch

22nd Agosto 2014

Post rebloggato da Txchnologist con 119 note

Light Makes Engineered Protein Motors Switch Gear

txchnologist:

image

by Txchnologist staff

Bioengineers have cobbled together DNA fragments from several organisms to build remote-controlled protein motors that change course and speed on command.

By customizing these proteins, which normally ferry molecules around inside cells, researchers hope to better understand how organisms convert energy from chemical to mechanical. They will also get a better picture of the forces that these motors generate within cells.

"Biology is full of these nanoscale machines that can perform complex tasks," said Stanford bioengineer Zev Bryant, who led the study. "Evolution takes a basic design and makes motors that are fast and motors that are slow and motors that move long distances. We’ve tried to build diverse motors and really challenge our understanding by pushing ourselves outside of what’s already been done by evolution."

Read More

21st Agosto 2014

Fotoset rebloggato da Colossal con 1.406 note

itscolossal:

3D Sculptural Paintings by Shintaro Ohata

21st Agosto 2014

Fotoset rebloggato da Colossal con 1.595 note

itscolossal:

Dramatic Tornadoes of Light Photographed by Martin Kimbell

21st Agosto 2014

Fotoset rebloggato da Colossal con 5.516 note

itscolossal:

Cosmic Flower Unfolding: An Abstract Metaphysical Animation by Ben Ridgway [VIDEO]

21st Agosto 2014

Fotoset rebloggato da Colossal con 5.631 note

itscolossal:

Meticulous Cut Paper Illustrations by Maude White

21st Agosto 2014

Fotoset rebloggato da Colossal con 21.588 note

itscolossal:

Edible Chocolate LEGOs by Akihiro Mizuuchi