Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris.

Figure 17. Pitot tube in a wind tunnel. By pointing the tube directly upstream into the flow and measuring the difference between the pressure sensed by the Pitot tube and the pressure of the ...

But are there electronic methods that can improve various functions of your brain? Fans of brainwave entrainment say yes. There was an old recruiting ad for electrical engineers that started with ...

Flow motion, or the muscle memory behind setting up an aircraft, is an integral part of a pilot’s daily routine that can be ...

Figure 18B shows the 12-lead ECG of the entrainment tracing of Figure 18A. The QRS morphology in all 12-lead ECGs during entrainment is identical to that of pacing in the absence of tachycardia as ...

Isochronic tones are used in brain wave entrainment, a method of getting brain waves to sync with a specific stimulus, typically an audio or visual pattern. Brain wave entrainment techniques ...

A device in the throttle body, the mass airflow, or MAF, sensor helps the engine computer determine the proper air-fuel mixture by measuring the mass of the air flowing past it. Because a precise ...

Filter Mat Filter mats are made of fibers which trap particles entrained in the flow of air or gas. Common configurations include bulk rolls, pads, and re-loadable frames. Panel Filter Panel filters ...

Bags are cleaned by backwashing (reversing the air flow) within a chamber after shutting off the ... Requires more maintenance than other types due to dust re-entrainment on the bags. Shaker baghouses ...

What's the best air fryer to buy? The air fryer is a relatively new addition to the world of appliances, and in my eyes, it's a magical countertop appliance. Whether you're an expert home chef or ...

Medically reviewed by Daniel More, MD A peak flow meter is used to measure your peak expiratory flow rate (PEFR). PEFR describes how quickly your lungs expel air during a forceful exhalation after you ...

If you want a new iPad Air at a discounted sale price, you’ve come to the right place. We’re looking at all the best deals and prices for the iPad Air right now–including contract plans.