So i'm telling you barometric pressure, i think it's a scam or maybe a conspiracy, here's why all right! So i'm looking at my phone and i'm looking at barometric pressure just happened to be. You know scrolling through the weather weather channel app, and i noticed something strange so look here: death valley, california, lowest place in the united states below sea level, check out the barometric pressure. 30.06 inches of mercury inches hg. So i think all right, that's interesting! So, let's look at the mile high city, denver colorado, definitely higher.

We all know that we are sitting at the bottom of an ocean of air when we're at sea level or in this case of death valley below sea level, so the more air stacked on top of us, the more pressure just like when you go deeper in The ocean, more pressure, lower down pressure matters to us for many reasons, air is less dense, so it doesn't move as much heat. It affects the operation of gas furnaces, there's a lot of factors that we need to compensate for air pressure. So i thought: hey. Let's use barometric pressure, so let's look at denver colorado! Oh look at that denver, colorado, barometric pressure, 30.24 inches of mercury almost the same.

What gives that doesn't make any sense. So what is going on here? Well, i think it's the illuminati again more proof that the earth is indeed flat and not round, but seriously. What i learned through this, and literally i did learn this this way, is that regional barometric pressure is actually normalized to sea level, so, rather than just taking a measurement in denver colorado a mile high, they take that measurement and they normalize it for the difference in Altitude, so that way across the country, you can all compare to sea level, barometric pressures, which means that if you were to take a barometer which was actually giving you a correct reading and measured in denver colorado, it would not match up with what you would see On these apps so take a look at this chart. Denver colorado is about 5 000 feet above sea level.

That would mean a base barometric pressure of about 24.7 inches of mercury, which equals 12.1 psia. Now remember: atmospheric pressure at sea levels about 14.7 psi, which is 29.92 inches of mercury. So back in the day when we used to pull vacuums in inches of mercury, we would use that more often we would start at 29.92 or 14.7 psia and we'd pull down below there. Just in terms of psi, you can see that we're about 2.6 from 14.7 to 12.1 about 2.6 psi different in denver colorado than at sea level.

Now, if we adjust that to inches of mercury, that brings us to about 5.28 inches of mercury difference. So if that barometric pressure was giving us a true barometric pressure reading, rather than showing us 30 inches of mercury, it would show us more like 25, which would mean that in every location around the world, you would get highly variable barometric pressures, depending on the elevation Of the location, besides it being very confusing, if you buy a barometer and trying to compare that barometer to these apps, it's also important for you to know that you just can't use barometric pressure for calibration. If, for some reason you wanted to here's, how you do the math for the denver reading of 30.24, you would take 5280 again mile high city divided by a thousand equals 5.28 inches of mercury pressure below sea level. Now, again, we have the chart.

We could just use the chart instead, but that's how you do the math, so you take 30.24. Minus 5.28 equals 24.96 inches of mercury. If you want to convert that into psia, 24.96 divided by 2.036 equals 12.26 psia. So if you wanted to do the math in order to use barometric pressure on the slight differences that you can get with barometric pressure in order to calibrate, you could, but in most cases, you're just zeroing to atmospheric pressure.

In the case of using your gauges or your manometers or those sorts of things in your typical service, but just realize that atmospheric pressure does change a lot more with altitude than it does with barometric pressure. But there are still effects of barometric pressure when the weather changes, the pressures outside do change and that can affect really fine readings, especially things like precision manometers, where you're measuring down in the pascal scale. So that's it. Barometers are a scam, never trust the weatherman.

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