What did you do Today 2018

[Martin KyteParticipant @martinkyte99762]

If you really dig around it's not just that women found it harder (nigh on impossible in some cases) to enter what was seen as a male sphere but they were often written out of the history when they did. This applies to science, art or virtually any discipline you care to think about.

My favourite example is Charlotte Guest, who when her husband John died became one of the foremost Victorian Iron Masters running personally the Dowlais Iron works in the days when technically it was illeagal for a woman to own property. You would know the modern offspring as Guest Keen and Nettlefolds GKN.

Wikki does not mention her but quite properly this site does.

**LINK**

regards Martin

[SillyOldDufferModerator @sillyoldduffer]

Posted by Neil Wyatt on 28/05/2018 23:19:46:

Posted by SillyOldDuffer on 28/05/2018 09:59:55:

The image has no intrinsic means of understanding up, down, right and left; these are decided by more-or-less intelligent guesswork in the camera, and added to the image as a suggestion. Bear in mind too that images can be made without needing a real scene or a camera at all.

Cameras usually do a good job, but not always. Even if they get it right, for historic reasons, there are at least three ways of suggesting orientation within image data and they need not agree, nor is there any law that says the software that decodes and displays an image has to obey the suggestions. And of course the software has no knowledge of reality either. It's a bit of a mess.

Sorry Dave, but you are completely wrong!

Any phone or camera remotely worth its salt will contain an accelerometer taht tells it EXACTLY what way up the camera was when the photo was taken.

But as many phones have all the controls on screen, it's easy to use them 'upside down'.

As orientation data is stored in the Exif information and the byte order of the image isn't changed software that doesn't look at the exif will just use the default orientation.

Neil

Me completely wrong? Surely not! Well not more than two or three times a day…

Anyway, in this instance I plead 'not guilty', specially as I said 'Cameras usually do a good job.'

As to the comment 'Any phone or camera remotely worth its salt will contain an accelerometer' . Four points:

• The specification of the £40,000 Hasseldblad H6D-400C doesn't mention it having an accelerometer. (No lens for that money either!)
• Camera accelerometers aren't meaningful in outer space, where I spend loads of time.
• On earth accelerometers don't always do what the photographer expects, especially pictures taken at odd angles.
• If a camera is pointing directly up (on a telescope) or directly down (on a microscope), which way round are portrait and landscape, and – even if there was a good answer – how does having an accelerometer help?

Really I'm just saying image rotation is unreliable because the programmer has too many choices when it comes to interpreting image orientation. Assuming JPEG rather than Raw or another format, should the program:

• Display the image as stored, or
• Use the JPEG orientation flag which is usually the cameras notion up/down/right/left, or
• Display Landscape when pixel width is greater than pixel height, otherwise Portrait, or
• Decode the EXIF flag to determine if the pixel rows and columns start top, bottom, right, left (Eight ways a camera is allowed to record or export the image ), or
• Decode other orientation meta-data (like JFIF / IPTC etc ) and use that.

This can get really complicated, for example exactly how should a program that rotates an existing image change the metadata? What matters more, what the camera saw, or the change?

These and other ambiguities embedded in the image before it arrives on your computer mean that software written to display images usually allows the user to rotate them. Unfortunately the display program may remember the preference in a way not meaningful to any other software, causing yet more confusion when you share the picture or view it with something else.

Dave

 

Edited By SillyOldDuffer on 29/05/2018 13:20:40

[HopperParticipant @hopper]

Posted by Jon Gibbs on 29/05/2018 11:31:08:

Posted by JimmieS on 27/05/2018 21:47:32:

Just reading a review of ‘Exactly How Precision Engineers Created The Modern World’ by Simon Winchester and smiled on reading ‘One striking thing is that ……. virtually all the advances in precision engineering seem to have been made by men, a high proportion of whom appear to have lacked fluent social skills. And it is really not clear that this is because women have been forcibly and unfairly forbidden from taking more of an intertest in things such as screw thread counts.

Indeed, almost every advance in engineering and technology covered in this book can be narrowed down even further, to middle-aged men from just four countries: Britain, France, Germany and America.’

I wouldn't call myself a feminist but it seems pretty clear that Simon Winchester needs a few history lessons and perhaps ought to have checked his facts, as well as dare I say "his privilege", before making comments like that.

The likes of Ruby Loftus in WW2, and her predecessors in WW1, only got their chances during wartime and were pretty much dropped as soon as peace was declared. In earlier years Ada Lovelace only got her recognition because she was rich and Byron's daughter and, despite being arguably more talented and farsighted, was forced to play second-fiddle to Charles Babbage.

Jon

Surely Winchester has his tongue in cheek when saying "And it is really not clear that this is because women have been forcibly and unfairly forbidden from taking more of an interest in things such as screw thread counts."? Most women, like most men, probably had better things to do. It seems unlikely that Ms Pankhurst and co were battering down the doors of the British Association to have their say on the proposed new series of screw threads combining an esoteric mixture of metric pitches and imperial dimensions for the purposes of retaining small components in electrical and instrumentation mechanisms. But I'll wager there was a flock of grumpy old (male) gits who bickered and back-stabbed for years over the likes of whether the thread forms should have radiuses or flats on the crests of the male thread vs the female, many of them refusing to speak to each other for decades after the matter was decided.

 

Edited By Hopper on 29/05/2018 13:47:59

Edited By Hopper on 29/05/2018 13:57:48

[Trevor Crossman 1Participant @trevorcrossman1]

Posted by SillyOldDuffer on 29/05/2018 13:17:06:

Posted by Neil Wyatt on 28/05/2018 23:19:46:

Posted by SillyOldDuffer on 28/05/2018 09:59:55:

The image has no intrinsic means of understanding up, down, right and left; these are decided by more-or-less intelligent guesswork in the camera, and added to the image as a suggestion. Bear in mind too that images can be made without needing a real scene or a camera at all.

Cameras usually do a good job, but not always. Even if they get it right, for historic reasons, there are at least three ways of suggesting orientation within image data and they need not agree, nor is there any law that says the software that decodes and displays an image has to obey the suggestions. And of course the software has no knowledge of reality either. It's a bit of a mess.

Sorry Dave, but you are completely wrong!

Any phone or camera remotely worth its salt will contain an accelerometer taht tells it EXACTLY what way up the camera was when the photo was taken.

But as many phones have all the controls on screen, it's easy to use them 'upside down'.

As orientation data is stored in the Exif information and the byte order of the image isn't changed software that doesn't look at the exif will just use the default orientation.

Neil

Me completely wrong? Surely not! Well not more than two or three times a day…

Anyway, in this instance I plead 'not guilty', specially as I said 'Cameras usually do a good job.'

As to the comment 'Any phone or camera remotely worth its salt will contain an accelerometer' . Four points:

• The specification of the £40,000 Hasseldblad H6D-400C doesn't mention it having an accelerometer. (No lens for that money either!)
• Camera accelerometers aren't meaningful in outer space, where I spend loads of time.
• On earth accelerometers don't always do what the photographer expects, especially pictures taken at odd angles.
• If a camera is pointing directly up (on a telescope) or directly down (on a microscope), which way round are portrait and landscape, and – even if there was a good answer – how does having an accelerometer help?

Really I'm just saying image rotation is unreliable because the programmer has too many choices when it comes to interpreting image orientation. Assuming JPEG rather than Raw or another format, should the program:

• Display the image as stored, or
• Use the JPEG orientation flag which is usually the cameras notion up/down/right/left, or
• Display Landscape when pixel width is greater than pixel height, otherwise Portrait, or
• Decode the EXIF flag to determine if the pixel rows and columns start top, bottom, right, left (Eight ways a camera is allowed to record or export the image ), or
• Decode other orientation meta-data (like JFIF / IPTC etc ) and use that.

This can get really complicated, for example exactly how should a program that rotates an existing image change the metadata? What matters more, what the camera saw, or the change?

These and other ambiguities embedded in the image before it arrives on your computer mean that software written to display images usually allows the user to rotate them. Unfortunately the display program may remember the preference in a way not meaningful to any other software, causing yet more confusion when you share the picture or view it with something else.

Dave

Edited By SillyOldDuffer on 29/05/2018 13:20:40

Well now I am totally lost and may as well be blindfolded and walking around on the dark side of the moon for all the sense that this rather ethereal digital comms speak means to me!

So to get myself back to reality, well as near as I'm likely to get in this crazy world, what I did today was to tackle some maintainance in the Hack'n'Bash section of my workshop. The recent application of some serious effort to a particularly recalcitrant piece of equipment had left my large vice rather skewed on the bench so these 1/2"bolts couldn't cope…………some nice new ones are now fitted, I hope they are not this new fangled ductile Chinese steel that most stuff seems to be made of!

Trevor

[Neil WyattModerator @neilwyatt]

Posted by Martin Kyte on 29/05/2018 11:57:32:

If you really dig around it's not just that women found it harder (nigh on impossible in some cases) to enter what was seen as a male sphere but they were often written out of the history when they did. This applies to science, art or virtually any discipline you care to think about.

My favourite example is Charlotte Guest, who when her husband John died became one of the foremost Victorian Iron Masters running personally the Dowlais Iron works in the days when technically it was illeagal for a woman to own property. You would know the modern offspring as Guest Keen and Nettlefolds GKN.

Wikki does not mention her but quite properly this site does.

**LINK**

regards Martin

Interesting! She has her own Wikipedia Page but the GKN article doesn't (didn't) link too it.

[Phil WhitleyParticipant @philwhitley94135]

Settled on a position for the milling machine today, went for the classic "across the corner" position which means I can get round the back to deal with belts and drawbars etc. Sorted!

[JasonBModerator @jasonb]

Post by Muzzer moved to here

[NigeParticipant @nige81730]

Today my wife and I took a trip to Arceurotrade to have a chat with Keatan. I ordered myself the current Sieg SC4 lathe bundle and the SX2.7 milling machine and stand. Came away a very happy bunny and spent the afternoon sorting the workshop to make sure all will fit in the spaces I have planned. Required a bit of shifting of stuff around but it will all fit in the end

[Adam MaraParticipant @adammara]

Final preps in the workshop for my SX2.7 arriving tomorrow from ARC! Excited!

[JasonBModerator @jasonb]

No wonder Ketan was able to treat himself to Pizza at the weekend with all these new machines flying out the workshop

[SamsarandaParticipant @samsaranda]

A couple of days ago I received a parcel from a supplier, the carrier was TNT. When I answered the door I said to the carrier if we are out whenever he comes then he can leave any parcels in a large plastic locker which is close to the front door. His reply was Ooh No we are not allowed to do that, company rules we must get a signature from the customer. Today the doorbell rings and I was a bit slow making it to the door, by the time I got there the carrier was putting the item into the plastic locker, it was the same carrier as before, TNT, and the same delivery driver, so much for company policy, I am sure they just make it up as they go. Funnily enough the item delivered today was a replacement for the item from a couple of days ago that was damaged when unpacked, I don’t know what they do with the parcels, some look as though they have been stamped on by the time they arrive. Another problem we seem to suffer is that a proportion of carriers employ drivers whose first language is not English, surprising how many items have gone astray or end up being delivered to houses in adjacent streets in the village.

Dave W

[Neil WyattModerator @neilwyatt]

I've discovered a bonus feature of the SC4 b- the angled lip of the splashback means it is perfect for QCTP holder storage without any modification.

Neil

[NigeParticipant @nige81730]

The SC4 lathe and stand plus SX2.7 mill arrived this morning😊 With the help of my daughter and son in law and a couple of sets of ratchet straps we soon had the mill on the stand that had gone in the other day. Next build the stand for the lathe. Move the support for the ratchet straps and pass each round a web between the ways on the bed so the lathe is suspended on its centre line. Balance was helped by moving the saddle towards the tailstock. Then lift the lathe high enough to position the stand underneath and drop it down onto the studs. Jobs a good un 😀👍

[NigeParticipant @nige81730]

And the mill

[Perko7Participant @perko7]

Spent a few happy hours today using the milling machine at the club. First time i've used it. Got to get myself one of these ……so many things i could do with it!!

[Neil WyattModerator @neilwyatt]

Posted by ChrisH on 15/01/2018 13:53:12:

Nice staffie

[Anonymous]

Hmmm, we seem to have got a fidgety Great Spotted woodpecker on the peanuts in the front garden. Normally when the woodpeckers visit they stay on the peanuts for many minutes, if not disturbed. But this one is regularly on and off in a few seconds. Must be something to do with the heat.

Andrew

[Brian HParticipant @brianh50089]

Finished rebuilding the spindle and other parts of my Alexander 3A engraver & diesinker. The inverter that I fitted is just great.

Now I just need a job for it!

Then onto my Alpine Mill drill. I've just fitted a DRO which works fine but I decided to change all the handwheel bearings while the machine was dismantled and I'm still waiting for 3 replacement ballraces to arrive.

Brian

[Neil WyattModerator @neilwyatt]

Posted by Andrew Johnston on 03/06/2018 15:33:47:

Hmmm, we seem to have got a fidgety Great Spotted woodpecker on the peanuts in the front garden. Normally when the woodpeckers visit they stay on the peanuts for many minutes, if not disturbed. But this one is regularly on and off in a few seconds. Must be something to do with the heat.

Andrew

Yesterday a dunnock spent twenty minutes going between the passenger side mirror of my wife's car and the driver side mirror of my car. I'm sure he was trying to see of his reflection in the mirrors/windows although he wasn't obviously behaving aggressively.

Main downside is a large amount of dunnock poo on my driver's mirror and door

[martin perman 1Participant @martinperman1]

Looked out of the bathroom window yesterday to see a squirrel and a rat having a fight over some bread scraps, will reduce the cats food so that he will start hunting again

Martin P

[Neil WyattModerator @neilwyatt]

Well that was strange!

I just spray painted a small item. As its looking like rain I did the third coat indoors and held my breath as it only took a minute, but I squatted down to do it. Got up and walked out of the workshop and promptly fainted! Not unconscious, but I completely lost the ability to stay upright and just let myself down and lay on the floor for thirty seconds. Very peculiar, I still feel light-headed. I've felt woozy standing up in a hurry before, but this has never happened to me.

My daughter was totally unimpressed – says that's what they used to do in primary school.

Neil

[Joseph Noci 1Participant @josephnoci1]

Neil, Don't let that lie – Not really the place here to talk on this, but that happened to a good friend, 52 years old, squatting while brushing dirt into a pan and passed out some seconds after standing up – he came to after a minute or so, with numbness in the left arm and calf. A visit to the Doc revealed he had suffered a 'minor' stroke and still has numbness in the left fingers, a year later..

Do have a check up…If its just blood pressure, that may not need ignoring either..

Take care

Joe

[David Standing 1Participant @davidstanding1]

Neil

It could also be vertigo, labyrinthitis, Meniere's disease, BPPV, or a whole host of other ear problems.

But, as Joseph says, please DO get it checked out.

[Speedy Builder5Participant @speedybuilder5]

I fell out of the office chair and found myself on the floor – pretty shocked. I called in the first aider who took me straight to the Docs. Fortunately an ear infection which I didn't know about. fortunately fixed with anti biotics. GET IT CHECKED – ITS FREEE.

[MikeParticipant @mike89748]

I've had this thing. I didn't pass out, but was so dizzy I couldn't stand up or walk, and had to crawl for two days. Also had to ask the doc to make a house call, as I couldn't drive or board the bus. It was an inner ear infection, easily treatable, and it has never recurred. But do get it checked because the doc told me there are two types – the simple type I had, or a permanent type which can recur at any time. Not that I wish to spread gloom……….

[Author]

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