Author Topic: The "I'm Such a Fecking Div" Thread  (Read 242710 times)

Re: The "I'm Such a Fecking Div" Thread
« Reply #2775 on: 11 October, 2021, 04:47:00 pm »
Have always been a little puzzled by the speed of light and time compression for space travel thing. Since speed is relative I never got why the return trip couldn't be considered that the rocket was stationary and the earth moving towards it very quickly so cancelling out the differences in time. It came up again in a book I was reading the other day. The next book I started on was Paradoxes by the physicist and TV presenter Jim Al-Khalili.
So I had a peek at his web site and there was a "contact me" button. So I did and asked him about speed of light thing and space travel thing, I also mentioned I was reading his book and enjoying it. Didn't really expect any answer.

Amazingly next morning I had an email from him. It said:

Its not a symmetrical thing as the acceleration and deceleration undertaken by the spaceship and not the earth breaks the symmetry. By the way this is covered extensively in chapter 8 of my book which you are reading ...

Pat slaps head ....

Nice of him to reply though.

.
See your sig line
<i>Marmite slave</i>

Re: The "I'm Such a Fecking Div" Thread
« Reply #2776 on: 11 October, 2021, 05:29:23 pm »
Have always been a little puzzled by the speed of light and time compression for space travel thing. Since speed is relative I never got why the return trip couldn't be considered that the rocket was stationary and the earth moving towards it very quickly so cancelling out the differences in time. It came up again in a book I was reading the other day. The next book I started on was Paradoxes by the physicist and TV presenter Jim Al-Khalili.
So I had a peek at his web site and there was a "contact me" button. So I did and asked him about speed of light thing and space travel thing, I also mentioned I was reading his book and enjoying it. Didn't really expect any answer.

Amazingly next morning I had an email from him. It said:

Its not a symmetrical thing as the acceleration and deceleration undertaken by the spaceship and not the earth breaks the symmetry. By the way this is covered extensively in chapter 8 of my book which you are reading ...

Pat slaps head ....

Nice of him to reply though.

.
See your sig line

Yeah, I always knew I was wrong just couldn't find it explained anywhere why :)
I think you'll find it's a bit more complicated than that.

ian

  • not a woman, not an american, not a vampire
Re: The "I'm Such a Fecking Div" Thread
« Reply #2777 on: 11 October, 2021, 05:37:36 pm »
Isn't it something to do with spacetime stretching, so symmetry is routinely broken (and this explains why distant starlight appears to break the conservation of energy but doesn't if you consider that spacetime continues to expand)?

Honestly, I don't know why this stuff took Einstein so long.
Authoritarian Thought Leader, the Pol Pot of Powerpoint, the Stalin of Spreadsheets

Kim

  • Timelord
Re: The "I'm Such a Fecking Div" Thread
« Reply #2778 on: 11 October, 2021, 06:00:04 pm »
Speaking of B&M, the dynamo buffer battery I put in a cupboard after PBP 2015 hasn't been used since and is probably dead.

And dead it is.  I put it in circuit & gave the wheel a spin: light stayed off. Battery out of circuit & spin again, light comes on.  Oh well.

Lithium-ion cell protection circuitry will probably trickle-charge until the voltage is in spec, before coming to life (if the cell isn't too far gone).  Suggest you ride PBP with it again and see if it starts working...
Careful, Kim. Your sarcasm's showing...

T42

  • Old fool in a hurry
Re: The "I'm Such a Fecking Div" Thread
« Reply #2779 on: 12 October, 2021, 09:10:09 am »
Speaking of B&M, the dynamo buffer battery I put in a cupboard after PBP 2015 hasn't been used since and is probably dead.

And dead it is.  I put it in circuit & gave the wheel a spin: light stayed off. Battery out of circuit & spin again, light comes on.  Oh well.

Lithium-ion cell protection circuitry will probably trickle-charge until the voltage is in spec, before coming to life (if the cell isn't too far gone).  Suggest you ride PBP with it again and see if it starts working...

I would dearly love to, believe me.

I'll try and knock together some kind of connector and put it on a USB charger.

ETA: I've got it hooked up to an old 9v battery (exp Jan 2001) which is still delivering 5.8ish voles, and sitting within smelling distance on my desk just in case.

ETA': That's rubbish: charging current is around 2 mA.  Recommended max is 1.5 A.
But they never got to Carcassonne.

Re: The "I'm Such a Fecking Div" Thread
« Reply #2780 on: 12 October, 2021, 09:07:08 pm »
I decided to shorten a pair of trousers using the iron-on web stuff that I have used successfully before. Went very well until I realised that I should have turned the trousers inside-out before starting. Doh!

T42

  • Old fool in a hurry
Re: The "I'm Such a Fecking Div" Thread
« Reply #2781 on: 13 October, 2021, 08:54:55 am »
I shortened my trousers that way for a job interview in the 70s.  When I came out I headed post-haste, still in my interview duds, to the clinic where my wife was about to give birth. While she was in the throes the tape job gave way.  The first thing the theatre nurses did after my daughter was born was to fetch sticking-plaster for my turn-ups.

Didn't get the job.
But they never got to Carcassonne.

Paul

  • L'enfer, c'est les autos.
Re: The "I'm Such a Fecking Div" Thread
« Reply #2782 on: 13 October, 2021, 12:25:42 pm »
I shortened my trousers that way for a job interview in the 70s.  When I came out I headed post-haste, still in my interview duds, to the clinic where my wife was about to give birth. While she was in the throes the tape job gave way.  The first thing the theatre nurses did after my daughter was born was to fetch sticking-plaster for my turn-ups.

Didn't get the job.
You got off lightly: a lot of people in that situation end up with stitches  :-X
What's so funny about peace, love and understanding?

Re: The "I'm Such a Fecking Div" Thread
« Reply #2783 on: 22 October, 2021, 04:20:45 pm »
For some reason I'm crap at out of office voicemail and on email. Did them all today, my old work mobile didn't do the thing where the keypad wouldn't display which leads to a long pause after I finish. Remembered to press # all good

Except I'd done them all retuning to work

1st October

I can either time travel or off work for 11 Months

Re: The "I'm Such a Fecking Div" Thread
« Reply #2784 on: Yesterday at 04:15:47 pm »
Mega div

Went for a rough, boggy bimble on local hills.
Stopped to take photos with phone at one point. Shoved phone back in bag.

Get home - no phone in bag.

I *probably* shoved it part way in and it fell out when I put bag on back - it was so windy I had trouble getting rucksack back on my back.

That was when I was standing in knee-high heather.

Likely location of dropped phone; over an hour's walk away at a minimum. But it could have been anywhere on a very rambling, pathless walk.


This is super-bad, as my phone is used to verify access to work systems.
<i>Marmite slave</i>

Kim

  • Timelord
Re: The "I'm Such a Fecking Div" Thread
« Reply #2785 on: Yesterday at 04:22:10 pm »
Can you locate the phone with 'find my device' or similar?
Careful, Kim. Your sarcasm's showing...

Cudzoziemiec

  • Моя планета голубая, я люблю тебя и обнимаю
Re: The "I'm Such a Fecking Div" Thread
« Reply #2786 on: Yesterday at 04:33:07 pm »
Just as drug dealers have burner phones and cyclists need crasher phones, walkers need loser phones.
Riding a bike through a city is like navigating the collective neural pathways of a vast global mind.

Re: The "I'm Such a Fecking Div" Thread
« Reply #2787 on: Yesterday at 04:39:58 pm »
Can you locate the phone with 'find my device' or similar?
That worked very well for my daughter's phone after she dropped it in some long grass on a walk. It was only a few hundred yards from where she was when she noticed its loss.
Quote from: Kim
Paging Diver300.  Diver300 to the GSM Trimphone, please...

Re: The "I'm Such a Fecking Div" Thread
« Reply #2788 on: Yesterday at 04:45:54 pm »
Can you locate the phone with 'find my device' or similar?

yeah . . .

The location given by that is at least 3 km out

<i>Marmite slave</i>

Re: The "I'm Such a Fecking Div" Thread
« Reply #2789 on: Yesterday at 04:46:38 pm »
Just as drug dealers have burner phones and cyclists need crasher phones, walkers need loser phones.

Or, when taking a phone in a pouch with a leash, they need to be not such an effing div and actually use the leash.
<i>Marmite slave</i>

Re: The "I'm Such a Fecking Div" Thread
« Reply #2790 on: Today at 02:44:43 pm »
Took the rear wheel out one of my bikes as dismantling the derailleur for a thorough clean. Due to mudguard need to deflate tyre a bit

Put all back together and went for a brew. Oiling chain and think hmm tyres a bit soft must have had a visitation. Thankfully just before taking it out to fix i noticed the valve was undone and remembered why

Basil

  • Um....err......oh bugger!
  • Help me!
Re: The "I'm Such a Fecking Div" Thread
« Reply #2791 on: Today at 04:14:19 pm »
That thing where you go for a wee and realise you flies are already open, and you are left trying to work out when you last had a wee, and where you've been since then.
Admission.  I'm actually not that fussed about cake.