Time

Not my grandson

Maybe it's because I'm getting older, but I've been thinking about time and how it slips by us. 

For example, my grandson just turned five years old. I remember when I met him he was just five hours old. And now it's been five years. Seems like it was only a few months, almost. He'll never be only 5 years old again. How long until he graduates high school or college?

Or my "new" car that I bought in June of 2023. It now has 18,732 miles on it and is over fifteen months old. It'll never be brand new again and it will never have only 18,732 miles on it again.

Time goes one way as far as us mortal humans know. I think about the Pink Floyd song "Time" and the line it "Sun is the same, in a relative way, but you're older / Shorter of breath and one day closer to death." At my age I have more days behind me than in front of me. I try not to let it get me down but, it's amazing how fast time is going by and how fast I'm getting closer to death.

There are all sorts of scientific theories about time. Some of them I understand (General Relativity for example) but a lot of them I don't. Can time be stopped or just slowed? Google "Twin Paradox." Well, if you travel close to the speed of light, you can slow down time. But that is impossible for humans with our current technology. Plus, even of you do travel close to the speed of light, you life won't be longer for you, just those who stay behind.

I guess I'll just keep living my life and try to make the best of the time there is left.

How does the passage of time make you feel? One day closer to death or it doesn't bother you? Let me know in the comments below.

Fall Eqinox

Next Sunday (the 22nd) at 12:44 PM UTC (5:44 AM Pacific time) is the fall (or autumnal) equinox in the Northern Hemisphere. This is when the sun is over the Equator and the daylight all over the globe is right around 12 hours. It also marks the beginning of autumn. The tilt of the Earth is pointing sideways to the sun. 

When I was a kid they would say during the summer, the axis of the Earth points toward the sun, and in the winter, it points away. I thought the axis changed, like a wobbling top. But then I couldn't figure out how the axis always pointed at the North Star. It took me years to understand how that happens as the Earth orbits the sun the axis stays the same but the orientation of the axis to the sun changes as the Earth orbits it. I often took things way too literally when I was a kid.

Also, when I was a kid growing up in Idaho, I couldn't understand why winter didn't start until late December (the winter solstice) when it usually started snow in early November. But we were at about 5,000 feet elevation where we lived (the Snake River Plain). 

And as always, time passes and we fly by another milestone.

At least I'm not writing about cars this week!

Black Wheels

We talked about why tires are black. Now we'll discuss black wheels:

It seems to me that black wheels on cars are the current popular style. I see them a lot on newer vehicles and in car ads. I drove by a car dealership the other day and there were five or six vehicles on their lot all in a row and all with black wheels. Maybe the car manufactures are trying to push them on us. I don't know.

In fact, my new car (well, it's over a year old now) came with black wheels:

At first I was thinking "I could live with them" even though I prefer more... blingy wheels. Then I lived with them. They got dirty if you looked at them wrong and they were hard to clean. And, as I said, I just didn't like the look of them. 

So when it was time to take off my winter tires, I left them on the black wheels and installed a set of BBS wheels which are much more pretty and don't get dirty as easily and are easier to clean.

I like the look so much more than the black wheels. I kept the winter tires on the black wheels to use when keeping a car clean is less important.

I don't know why black wheels are so popular, at least with automakers. I remembered being baffled by the large wheel phenomenon (which, to an extent, is still happening), too. 

What do you think of black wheels? Do you care? Or are they just mostly ugly? Let me know in the comments below.

Why is the Michelin Man White?

Has it ever bothered you that the Michelin Man is white and tires are black? Why is that?

The Michelin tire company was started in 1889 in France. Tires were (and are) made of rubber. But rubber is white. So tires were white. So the Michelin Man was probably made white for that reason. 

And Michelin is now running ads in the US with cartoon white tires on cars. Which I find kind of funny.

Tires stayed white until 1910 when the Goodrich tire company in the U.S. started putting carbon black into tire formulations. Carbon black acts as a catalyst during the vulcanization process, which turns soft rubber into the more durable and elastic substance we use in automotive tires and elsewhere. It not only prevents the rubber's deterioration by stabilizing dozens of chemical bonds, but it increases the material's tensile strength, or the maximum amount of stress it can bear before breaking. This is obviously a boon for tires, which face constant strain. There is still carbon black in modern tires.

What is carbon black? It is a material produced by the incomplete combustion of coal tar, vegetable matter, or petroleum products, including fuel oil. The biggest use of carbon black in the world is tires. It is used as a pigment and reinforcing phase in automobile tires. Carbon black also helps conduct heat away from the tread and belt area of the tire, reducing thermal damage and increasing tire life.

Why is the Michelin Man still white after over 120 years of black tires? Well, you'd have to ask the company. But a black Michelin Man just would look strange, these days.

What do you think? Should the Michelin Man be black? Or are you okay with white? Let me know in the comments below.