Archive

Archive for gener de 2016

It is faster if you stand on the escalators

5720026-3x2-700x467

As State tells us in its article: Don’t Walk on Escalators. It’s Faster if Everyone Stands.

A survey from the Greenwich University in 2011 found out that 75% of the people from the metro do not walk when they are at the escalators while the other 25% do. Firstly, we can easily see that set apart half the escalator for only the 25% of the people does not make too sense. In addition, people usually keep more distance when they are walking than when they are still.

So it seems this is a studied issue that has been simulated many times, and with always the same conclusion: If everyone stands still, the escalator can take on more passengers per minute.

For instance, the simulations made by “Transport of London” determine that an escalator full of stopped people is able to carry 112,5 people per minute. And the same escalator with 2 queues, one for whom are walking and other for the stopped people, makes the flux decreases to 81,25 people per minute.

More recently, a real test confirmed the simulation results: For some weeks, the London metro workers were forcing the passengers to keep still on the escalators. Well, they tried to do as much as they could, asking kindly to stay still, or even blocking the way with couples holding hands, and other ruses to block the walkers.
Although it was impossible to stop everybody, the result pointed that the same escalator which used to carry 12.745 people per hour (at rush hour), was able to carry 16.220 people within the same time.

The problem, of course, is that an individual person goes faster when he walks on the escalator. In fact, it turns impossible and complicated not to walk for many people, especially if they are in a hurry.

 

More details about it at The Guardian: The tube at a standstill: why TfL stopped people walking up the escalators.

From: Mircosiervos – Es más rápido para todos permanecer quieto en las escaleras mecánicas.

Categories:From Microsiervos

Model car at 204 mph speed

The model vehicle of the video reaches the awesome speed of 204 mph, which means that for a moment it turns from a toy to a killing weapon. Just as a lost particle from the CERN accelerator.

Anyway, at this competition modality for model vehicles, the car is tied to the stake in the center of the circuit, which has about 20 meters wide (of diameter). The basic concept is similar to the cable-piloted aircraft, except for in this case the driver doesn’t control the steering nor the throttle of the car. The only aim is to go faster and faster before it runs out of fuel.

The vehicle can be powered by a combustion engine (usually by burning alcohol), or by electric engines. The current speed record is set almost at 214 mph. This VoltsWagen is a competition model with an electric engine, able to reach the 200 mph on a good day.

***

But wait! Check this out, too

This remote-control car race may be more thrill than the last 5 F1 championships, and not only because of the flying overtake.

 

From: Microsiervos – Un coche a escala a 330 km/h + una emocionante carrera de coches teledirigidos

Categories:From Microsiervos
Enfilant el camí

Visualitzant el present per construir el futur

El Noguer

Visualitzant el present per construir el futur

Visualitzant el present per construir el futur