Thursday, August 17, 2017

A Perfect Total Eclipse

With all the news about next week's solar eclipse, I was thinking about why we always see the same side of the moon.

The answer is simply because the time it takes the moon to orbit the earth is the same amount of time it takes to rotate on its axis (about 27 days).

That got me thinking... 

Why does the moon nearly perfectly block out the sun during a solar eclipse?

My conclusion, after running some calculations, is that the sun is 400x wider than the moon but it's also nearly 400x farther away.

Feel free to peer review my calculations.

Friday, August 4, 2017

Air Traffic Control Center Tour

I took a tour of an air traffic control facility, this afternoon, and learned a few things from a controller's perspective. We couldn't take photos as we toured the actual floor of the air traffic control center, but we were allowed to snap pictures in the training center; they look almost identical.
1. There are three basic types of air traffic controllers, each of which is highly specialized: those who work in the towers at the airport, those who work in the "centers" that handle en route traffic, and approach/departure terminal controllers who handle traffic arriving and leaving the airspace outside of an airport. So, a center controller hands traffic over to a terminal controller who would then hand traffic off to a tower controller for landing at an airport. Simple concept, tricky execution, especially when there's a VFR pilot flying close to controlled airspace (like Class B) and not talking to any controllers, which is perfectly legal when flying VFR (i.e. not on a flight plan).
2. Air traffic controllers jokingly refer to jumpers (parachutists) as "meat rockets." (Parachutists don't show up on radar.)
3. For IFR pilots: It's rare that a controller will ask a private pilot to fly an "unpublished hold," especially on a VOR. In other words, it would be rare for a controller to tell a pilot, "Hold east of the Oceanside VORTAC on the 090 radial, left turns, maintain 5,000,' expect further clearance 0+50." The controllers probably wouldn't know the exact phraseology, either, and VORs are going away in lieu of GPS. For private pilots in small (slow) planes, controllers would rather simply give a pilot vectors to fly a box rather than a racetrack (see last photo).
4. Everyone knows "Mayday. Mayday. Mayday," but no one seems to know or use "Pan-pan, pan-pan, pan-pan." Mayday: Emergency (from the French, "m'aider" meaning "help me"). Pan: Urgent problem (from the French, "panne" meaning "breakdown" – think of it as Mayday lite). 🛬

Today, I turn 0x32 Years Old

Today, I turn 0x32 years old (0b110010 for you binary nerds). That's half a century of life experiences for me.

Now, I am officially old. I have that old-man smell like mothballs and Aqua Velva. As a matter of fact, when I had a question earlier today, instead of looking up the answer on the Internet, I e-mailed a buddy asking him to explain it to me.

Some say that age is a state of mind, but there are absolute signs of “old age” and I clearly received one of those, this week: My membership offer for AARP. If I pay $16 to join in the next ten days then I’ll also receive a FREE Sport Tote. 

So, hit me up if any of you young whippersnappers need to know how to use Compuserve, Prodigy, MySpace, pogs, carbon paper, a fax, or 8-track. I'm your (old) man. (Sorry, I can’t help you with computer punchcards… I’m not a that "experienced.")

You can e-mail me at my AOL e-mail address and I'll respond as soon as my secretary prints out your e-mail for me to read. (I jot down my response on the bottom of the page and then she types up my reply.)

More importantly, I’m currently looking for work as a Y2K consultant, so keep me in mind if you spot any job openings. 

Also, I have a bottle of witch hazel in the valise on my Davenport, in case you need any. #groovy #swell

Now please excuse me while I chase some kids off my front lawn and then head to the beach with my metal detector after going for a ride on my recumbent bike.

AOL Keyword: Birthday

Happy 25th anniversary of my 25th birthday. 

#generationX

Tuesday, August 1, 2017

How to Stop Google From Storing Your Voice to Text Recordings

Today, I ran across an article pointing out that Google is storing your searches and queries, including your voice to text dictation data.

I forgot that, many years ago, I had turned off all of these features, so Google doesn't report to me any history of my activity on any of their websites. But, I surprised some friends when I showed them how Google was storing their info. It is relatively easy to see what personal data they're recording. Simply visit the following webpage when you're logged into one of your Google accounts:
https://history.google.com

All clear - there's nothing to see here.


The following link will take you, step by step, through a Google privacy checkup where you can tell them what personal data you want them to record:
https://myaccount.google.com/privacycheckup