Buildings are colonized by airborne microbes that enter through windows and through mechanical ventilation systems.

We spend an extraordinary amount of time in buildings that are extremely controlled environments, like this building here environments that have mechanical ventilation systems that include filtering, heating and air conditioning.

If you look at the x axis of this graph, you'll see that what we commonly want to do which is keeping the outdoors out we accomplished that with mechanical ventilation.

(6) having an actually measured surface and underground engineering comparison drawing, a mining and excavation plan and a ventilation system drawing

This room has fine ventilation.

Completely mechanical. This whole machine is mechanical.

We looked at rooms that were naturally ventilated, where the hospital let us turn off the mechanical ventilation in a wing of the building and pry open the windows that were no longer operable, but they made them operable for our study.

Should we keep the outdoors out of hospitals? Ecologist and TED Fellow Jessica Green has found that mechanical ventilation does get rid of many types of microbes, but the wrong kinds the ones left in the hospital are much more likely to be pathogens.

These are little mechanical computers.

We blocked them off at night so that they got no ventilation.

This is the natural posture of a man sitting, squatting for ventilation purposes.

You see the sunbeams coming from the ventilation ducts and the train approaching.

It's completely mechanical, again, a printer.

So I was trying to, you know, take the engineer's version Can we build a mechanical system in inorganic materials that will do the same thing?

So you think of alternative mechanical parts.

Well, they can communicate through mechanical forces.

They're embedded with mechanical electrical devices, sensors.

Dust is generally formed by mechanical processes.

impressed so many tourists. The toilet has ventilation all year around without a peculiar smell.

That's wrong because the theory is quantum mechanical.

Now, of course, Babbage's machine was entirely mechanical.

(a) Air Monitoring discharge post filtration, using probes inserted into the ventilation systems within the complex

And it's walked away. I mean, it's that mechanical.

In the curved part there's all the mechanical equipment.

(b) Determine the mechanical properties of the asteroid material

Is it simply the byproduct of a crude mechanical action?

So my uncle is only dealing with a mechanical interface.

This is Baron Wolfgang von Kempelen's mechanical chess playing machine.

He taught me all sorts of things about mechanical things.

It's a mechanical solution to a problem, instead of using mechatronics.

The grooves become the kind of green lungs which give views, which give light, ventilation, make the building fresher.

It doesn't matter if your computer's mechanical, like Babbage's was, or electronic, like computers are today, or perhaps in the future, cells, or, again, mechanical again, once we get into nanotechnology.

Again, this robot can't see anything, it can't feel anything, it has no brain. It's just working with a tuned mechanical system, with very simple parts, but inspired from the fundamental dynamics of the animal.

How to take care in five easy steps first of all, you can use natural ventilation. You can use body breath.

It started with tiny quantum mechanical fluctuations, but expanding at a tremendous rate.

But back above ground, these raised ventilation grates for the subway system show that solutions can be both functional and attractive. In fact, in New York, San Francisco and London, designers have envisioned ways to better integrate the natural and built environments with climate change in mind.

This process is an engineering problem, a mechanical problem, a logistical problem, an operational problem.

Narrator The mechanical beasts will not get their energy from food, but from the wind.

But ultrasound can be shaped to be anything in between, because it's a mechanical force.

The use of fuelwood for household cooking and heating can also cause health hazards and respiratory illness, especially in small spaces without proper ventilation.

It's a little mechanical pen that has very, very fast step motors inside of the pen.

We have to recognize that human flourishing is not a mechanical process it's an organic process.

They commissioned a group of their best scientists to investigate, and what they found was that all these tape drives were located near ventilation ducts.

But it's remote. It's remote and accessible so it's safe and we don't depend on mechanical refrigeration.

Once they're fully deployed, there's a mechanical lock that goes into place, again, from inside the cockpit.