What is the newest installment of 'Random Thoughts' on Physics Forums?

[Oldman too]

"Half a David"

Could be a Freudian slip, had Mogen David on his mind?

 

[WWGD]

Could be a Freudian slip, had Mogen David on his mind?

Yes, sounds like a good guess.

 

[fresh_42]

The area of oil as the primary energy carrier of sea transports will end. I doubt that atomic-driven civilian vessels will come. That leaves us with wind.

Too early to invest in pepper?

 

[strangerep]

The area of oil as the primary energy carrier of sea transports will end. I doubt that atomic-driven civilian vessels will come. That leaves us with wind.

Too early to invest in pepper?

There are better sources of wind, e.g., politicians, chili, old men, (oops!)

 

[Rive]

It may be only for me, but searching for 'Mouser' (electronics component distributor) on Google returns with two of their competitors as the first two hit...

 

[WWGD]

I'd say legal advice from someone referring to a "Half a David" * may not be too reliable.

*Affidavit. clear after an hour what he meant. A full David may be too much. A Goliath...?

Turned out to be a scammer. Not really surprised.

 

[WWGD]

Weird that I'm suddenly finding food items I often eat without any major issue, to be overly sweet.

 

[dlgoff]

My daughter just passed her single engine pilot instrument rating check ride. This is what she said in an email reply:

Checkride went well. I just passed so now I officially have my instrument rating. Time to work on commercial now.

 

[Tom.G]

Now THAT is one persistent gal!

 

[dlgoff]

Weird that I'm suddenly finding food items I often eat without any major issue, to be overly sweet.

examples?

 

[strangerep]

Weird that I'm suddenly finding food items I often eat without any major issue, to be overly sweet.

Have you trying googling something like "why do suddenly find things too sweet?". Some potential causes sound serious enough (e.g., diabetes) that checking with your doctor seems justified.

 

[WWGD]

examples?

Ice cream, Diet Pepsi . I just noticed yesterday. I had passed my previous physical with flying colors. I exercise 6x /week; strength and cardio.

 

[WWGD]

I'm also regular, and I empty my bowels daily, at 7 a.m. Unfortunately, I wake up at 8 a.m.

 

[Hamiltonian]

Some folks these days can barely hold a conversation without looking at their phone every minute. Many will literally start scrolling Instagram while you are talking to them.

 

[WWGD]

Some folks these days can barely hold a conversation without looking at their phone every minute. Many will literally start scrolling Instagram while you are talking to them.

I've made it a point to spend 10-15 min daily just sitting, doing nothing, just forcing myself to slow down..

 

[dlgoff]

Some folks these days can barely hold a conversation without looking at their phone every minute. Many will literally start scrolling Instagram while you are talking to them.

Yes. I can't forget the time while walking in a shopping mall, a teen age girl, while looking down at her phone and walking toward me, ran into me.

 

[pinball1970]

Yes. I can't forget the time while walking in a shopping mall, a teen age girl, while looking down at her phone and walking toward me, ran into me.

In terms of culture change, Radio, TV, NET, Cell and NET + phone for me not a good move.
Net plus phone that is

 

[WWGD]

Hey, how about we meet at the café, so we can look at our phones and ignore each other?

 

[pinball1970]

Hey, how about we meet at the café, so we can look at our phones and ignore each other?

It crossed my mind during Ukraine early doors. This may not end well so let's meet kind of thing.

The invite would have been ...

Hey guys we will probably be vaporised next week. Fancy a beer and a piece of pie?

Pick a city

 

[WWGD]

It crossed my mind during Ukraine early doors. This may not end well so let's meet kind of thing.

The invite would have been ...

Hey guys we will probably be vaporised next week. Fancy a beer and a piece of pie?

Pick a city

Don't get your hopes down. It seems a

It crossed my mind during Ukraine early doors. This may not end well so let's meet kind of thing.bc

The invite would have been ...

Hey guys we will probably be vaporised next week. Fancy a beer and a piece of pie?

Pick a city

Don't despair, I read about a black hole headed towards Earth ( general direction) . It appeared to be a few hundreds of thousands light years away, but of course, we're seeing it at the time the pic was taken, not at this moment.

 

[WWGD]

Aren't these last names that start with 'Or', confusing?
"Hi, I'm John Ortega"
wait, which one is it, John, Tega? Is it a riddle, or are you giving us a choice?
I remember Tony Orlando. Half the people called him Tony, the other half Lando.

 

[strangerep]

I can't forget the time while walking in a shopping mall, a teen age girl, while looking down at her phone and walking toward me, ran into me.

Ha! I love it when that happens. I'm quite tall, hence I tend to be invisible to small people. Their face literally bounces off my lower chest and sometimes they almost fall backwards. From the look on their face, they seem not to understand immediately what's happened.

Little kids are even more fun. If I'm walking with a full shopping bag I make sure to raise the bag so that its (timber-strengthened) bottom is at their face level. I stand still as they strike it (so no one can claim that I walked into them).

(Am I a bad person?)

 

[pinball1970]

Ha! I love it when that happens. I'm quite tall, hence I tend to be invisible to small people. Their face literally bounces off my lower chest and sometimes they almost fall backwards. From the look on their face, they seem not to understand immediately what's happened.

Little kids are even more fun. If I'm walking with a full shopping bag I make sure to raise the bag so that its (timber-strengthened) bottom is at their face level. I stand still as they strike it (so no one can claim that I walked into them).

(Am I a bad person?)

No they learn life lessons that way. Them getting a boo boo from your bag is better than them walking into the road under a truck.

 

[pinball1970]

Don't get your hopes down. It seems a

Don't despair, I read about a black hole headed towards Earth ( general direction) . It appeared to be a few hundreds of thousands light years away, but of course, we're seeing it at the time the pic was taken, not at this moment.

At least a black hole will not be our fault.
I supposed going into it would be unpleasant though, it would strip off hot ionized gas from the sun? Vaporizing the Earth in the process?
Be nice to imagine a future without possible vaporization.

 

[BillTre]

Be nice to imagine a future without possible vaporization.

I don't think I'll be sticking around long enough to get vaporized in that manner.

 

[fresh_42]

I don't think I'll be sticking around long enough to get vaporized in that manner.

What a great relief. I thought I had to nail a sign at my head reading: medium rare.

 

[ergospherical]

40 degrees on monday here in the uk. thankfully in the lab we will be working with liquid helium. for making gelato, probably.

 

[WWGD]

More famous is the Mandelbrot set (here: apple men).

Thank you, I'm aware of both the Cantor Set and The Mandelbrot Set. But, are all Fractals recursive, or can they be obtained by recursion?

 

[fresh_42]

Thank you, I'm aware of both the Cantor Set and The Mandelbrot Set. But, are all Fractals recursive, or can they be obtained by recursion?

Fractals are defined by self-similarity, not by recursions, but isn't this already a recursion?
https://arxiv.org/abs/1010.4474

 

[WWGD]

Fractals are defined by self-similarity, not by recursions, but isn't this already a recursion?
https://arxiv.org/abs/1010.4474

I'm kind of confused on whether the defining property is self-similarity or having non-Integer Hausdorff Dimension. Pretty sure all Fractals have non-Integer Hausdorff dimensions, but self-similarity may not imply fractal. A standard circle or square would be such ( counter) example.

 

[WWGD]

40 degrees on monday here in the uk. thankfully in the lab we will be working with liquid helium. for making gelato, probably.

I guess UK has made a full transition to Metric. Otherwise something seriously wrong there, at least in Cambford.

 

[WWGD]

More issues with parsing . Fourier $\neq 48$. Except maybe for the French.

 

[fresh_42]

I guess UK has made a full transition to Metric. Otherwise something seriously wrong there, at least in Cambford.

I assume 40°C in the lab, 40°K for the helium. Both SI units.

 

[Jarvis323]

Thank you, I'm aware of both the Cantor Set and The Mandelbrot Set. But, are all Fractals recursive, or can they be obtained by recursion?

Anything which can be computed using recursion can be computed without recursion and visa versa. So the question boils down to asking wether all fractals are computable.

I don't know if the definition of a fractal is clear enough to answer. If we are talking about an instance of a fractal then yes, in a trivial way, you can multiply an uncomputable real number with each coordinate value.

Besides a trivial example like that, and if we factor out all of those kinds of non-essential factors like noise, I'm not sure. How about a fractal which switches between two rules periodically as it recurses, but uses an uncomputable sequence to determine if it will switch or not at the start of each period? Then it is morphing unredictably between different fractals. Is that a fractal?

 

[WWGD]

Anything which can be computed using recursion can be computed without recursion and visa versa. So the question boils down to asking wether all fractals are computable.

I don't know if the definition of a fractal is clear enough to answer. If we are talking about an instance of a fractal then yes, in a trivial way, you can multiply an uncomputable real number with each coordinate value.

Besides a trivial example like that, and if we factor out all of those kinds of non-essential factors like noise, I'm not sure. How about a fractal which switches between two rules periodically as it recurses, but uses an uncomputable sequence to determine if it will switch or not at the start of each period? Then it is morphing unredictably between different fractals. Is that a fractal?

Formally, a fractal is a Topological space with Fractional Hausdorff dimension. It is a space that cannot quite be qualified as being n-dimensional, for n a Natural number.