Acme

Have you looked in Settings for a switch? Mind you I know Jack-squat but I asked one of the kids and he said he can do apps off the sd-card in his Android phone. :shrug:

About 10 years ago I went to Sicily and during my stay there I explored a limestone canyon (not sure what it would be classified as). I had a great time exploring small caves and used chisels and brushes to excavate some small fossils. This was not a heavily developed area, virtually no tourists, and the site was on private property (I was given permission by the property owner).

 

While searching for fossils, I found (what appears to be) a vase handle and have kept it ever since. My question is...how old is it? I'm not trying to scam anyone or anything but, should this be in a museum?

 

Is it too "young" to carbon date? Is it likely just a piece of trash from 20 years ago or is it a relic from...1000 years ago? (idk)

 

Thank you for your help

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Ceramics are dated using thermoluminescence.

Thermoluminescence dating

Thermoluminescence (TL) dating is the determination, by means of measuring the accumulated radiation dose, of the time elapsed since material containing crystalline minerals was either heated (lava, ceramics) or exposed to sunlight (sediments). As a crystalline material is heated during measurements the process of thermoluminescence starts. Thermoluminescence emits a weak light signal that is proportional to the radiation dose absorbed by the material.

 

The technique has wide application, and is relatively cheap at some US$300700 per object; ideally a number of samples are tested.

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@imatfaal:

Must we link to circuit or can + / - end at different nodes?

Must spare 2 pipes to connect down from DC source (+) (-) on ground floor.

You can light the 27 bulbs by series connection..

that will require 29 pipes w/ single wire, but the output

will not be enough. So the design is a parallel connection.

 

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PS In the series 'not enough' scenario, all that is necessary is to up the voltage. Upping the voltage in the parallel circuit will not fix 'not enough'.

Even if quantum physics is a waste of time, so what? Peoples' time is theirs to waste and there is no end of works that don't 'benefit' humanity. Knitting doilies comes to mind. Damnable doily knitters anyway! No skin off my shins.

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I'm not too sure if it be worth it too try and go back any further, as I remember hearing something about a church fire in which all the birth records were lost.

Your church record reference prompts me to mention another avenue of genealogical research and that is family Bibles. Part of the archive I took charge of includes 2 such Bibles, one of which has pre-printed blank pages for the recording of births, deaths, and marriages. I have the scans on a separate drive, but I'll have a look and see about putting up one of the pages for illustration.

OK. Found it. A slight correction as both Bibles had titled blank pages for family entries. The scan I'm putting up is from a very large Bible printed in 1852 and rather more elaborately illustrated than the other.

It is just by chance I came by these and finding them may take some detective work by others doing genealogical research. Again, peoples' level of interest will determine how much work they are willing to undertake.

How does air gets in the hollow of bird bones ? Is it somehow renewed or stale ?

Lung -Avian

...The lungs of birds are relatively small, but are connected to 89 air sacs that extend through much of the body, and are in turn connected to air spaces within the bones. ...

Yes, many rabbit-holes lie ahead. My great grandad, born around 1887, wouldn't let his wife, who already had a child out of wedlock, transfer his name to her daughter. My Aunty Madge had to go though her early life known as a bastard.

Another avenue for tracing genealogy that is more recent is DNA typing. It's not particularly cheap and obviously requires cooperation, but it can resolve some questions that records and recollections can't or won't.

Speaking of genealogy, shame, & DNA, this skeleton recently came to light. Presidential love child? Gasp!

Ex-President Warren Harding's love child confirmed

It turns out the rumours were always true - America's 29th president had a love child.

New genetic tests reveal Warren Harding fathered a child with Nan Britton during his presidency.

The tests show that Harding, who was married, was indeed the father of Elizabeth Ann Blaesing, the late Britton's daughter.

Harding's immediate family and the public had rejected the claims and shamed Britton, calling her a liar.

Dr Peter Harding, one of the former president's grand-nephews who spearheaded getting the DNA tests done, told the BBC he is "totally jubilant" to finally know the truth about Blaesing's father.

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Before the second half of the twentieth century this was no small matter

My mother was always forthcoming with such uncomfortable information, even when it may have cast her in what to some was poor light.

Kind of on that note I have another photo to share. It's a tin-type that was hidden between images in a photo album of a particular family line and I would guess it lay there unknown for perhaps scores of years. Had I not needed to remove the pictures to scan them I would never have found it. It's hard to guess the girl's age but it seems she was cared for and yet something of an embarrassment. There was also a hidden photo of a young man in the same album, but there was no apparent reason for that secretion. Other than a likely surname of Morse because of the album origin, I have no identification of these folks. Mysteries wrapped in riddles tied up in enigmas. The game is afoot!

Or if you married somebody of different religious denomination

Thats the thing it was a strange outlook message which added him to my people contacts but gave me no contact info other than an address

 

 

 

So, try to contact him at that address. Do a search of phone directories or other similar listings. As I say it can be a lot of work and your level of interest will dictate how much work you want to do.

Don't disregard caution of course as you don't want to reveal personal information willy-nilly to just anyone.

I have even found some trusted relatives that don't want to know genealogical information that is, shall we say, uncomfortable such as divorces or children born out of wedlock.

 

In any regard, what evidence do you have that people in depressed moods have a choice to -presumably- not be depressed?

In any regard, Matt is clearly suffering from mental distress and open forums are no place to hash out these issues. We are none of us clinicians and even were we it would be improper for us to engage in offering advice here.

Matt, if you are seeing a professional then share your concerns you have expressed here with them. If you are not seeing a professional then consider doing so.

The only thing I know is an old man born in 1944 with my family name contacted me last year claiming to have known my grandfather. From Wiggan Uk but I haven't heard anything from him since.

Well, that's something. If you're really interested you can try to contact him rather than wait for him. Being as he's old, time may be limited and once he's gone, then so too is your potential source.

My interest has always been rather casual but last year I was entrusted to scan a cache of thousands of family photographs as well as family trees made up by relatives and this all piqued my interest. Some of the photos are tin-types dating to the mid/late 1800's and others run up to present times. Some of my family are interested and others couldn't care less and beat as hasty a retreat as possible when I start relating relations. We have traced our ancestors back to the mid-1700s in America and by-and-large they came from England and Sweden.

Just to share a bit, this photo was taken in Kansas in 1885 and the girls are my great aunts Effie & Ella.

I didn’t assert people choose to be depressed, my assertion, is that in a depressed state we have the choice and in this particular case the choice seems to be blaming others.

I didn’t assert people choose to be depressed, my assertion, is that in a depressed state we have the choice and in this particular case the choice seems to be blaming others.

From the article I cited [bolding mine]:

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Controversies

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A problem in analyzing the results of mental health research and mental health statistics is the prevalence of reporting bias. Currently, the only way to collect data is to survey people and look at hospitalization rates. There are potential problems with people mis-reporting their feelings, the frequency of depressive and anxious thoughts, and other information that subjects might want to suppress or might not realize are significant. This is exacerbated by cultural norms that encourage males to not express their feelings and to “tough it out” while women are encouraged to express emotions.[31]

 

There is also the tendency to view mental illness as "all in your mind," with the preconception that the problem can be solved by just trying hard enough. Subjects may underreport the prevalence of depressive or anxious episodes, men more so than women for the above reason. Because of perceived stigma, subjects may resist the idea that they might have a mental illness and attempt to suppress any hint to the contrary on a survey.

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Good and bad isnt relevant to anhedonia.

In my experience we have a choice; be depressed and blame others, or determine your own path.

Its much easier to blame others and expect them to appease your passage.

Depression (mood) @ Wiki

...Causes

Life events

 

Adversity in childhood, such as bereavement, neglect, unequal parental treatment of siblings, physical abuse or sexual abuse, significantly increases the likelihood of experiencing depression over the life course.[4][5][6]

 

Life events and changes that may precipitate depressed mood include childbirth, menopause, financial difficulties, job problems, a medical diagnosis (cancer, HIV, etc.), bullying, loss of a loved one, natural disasters, social isolation, relationship troubles, jealousy, separation, and catastrophic injury.[7][8]

 

Adolescents may be especially prone to experiencing depressed mood following social rejection.

...[9]

 

Visit cemeteries; families are often interred together. If you can't visit personally, use this tool to visit virtually. > Find A Grave

The problem with that is my family like many at the time found work as farm labourers. The landlords would pick people up at hiring fairs and they would work and be buried where the landlord lived. It was while my greatgrandfather was working for one such landlord that the house was burned down by the IRA and the landlord was shot. My family would have lived in the servants quarters of the landlord's house. Of course they would have used to have land of their own because my great grandfather fought in ww1 but the english took his land off him because he married an english woman.

 

Cemeteries are not the be-all-end-all of genealogical research, rather they are just another tool in the bag and one such tool that no one had yet mentioned.

Another such tool is family photographs, at least going back to the origin of photography. I have found that these old photos are often annotated with dates taken, people pictured, and location of the scene.

There is also the problem of misinformation, whether accidental or intentioned so as to hide skeletons. All-in-all, genealogical research is hard work but not without its rewards.

Visit cemeteries; families are often interred together. If you can't visit personally, use this tool to visit virtually. > Find A Grave

Whether a hydrogen cloud collapses or not depends on its mass, radius, and temperature. Not all hydrogen clouds condense to form stars, but some do.

Stellar Evolution

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2a. Jeans Radius for cloud collapse. A cloud with radius R, mass M, and temperature T will collapse to form a star if the total energy of the cloud is <0, i.e, if the (absolute value) of the potential energy exceeds the thermal energy of the cloud:

where N is total number of particles in cloud

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The first in 30 years!

With Discovery, 3 Scientists Chip Away At An Unsolvable Math Problem

Jennifer McLoud-Mann had almost come to believe that her last two years of work had been for naught.

 

"It had gotten to the point, where we hadn't found anything," she said. "And I was starting to believe I just don't know if we're going to find anything."

 

Armed with an algorithm, McLoud-Mann, along with her husband, Casey Mann, and David Von Derau all of the University of Washington, Bothell had been trying to help unravel one of math's long-standing unanswered questions.

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Pentagon tilings @Wikipedia: >>Pentagon tilings

The new tiling @Wiki.

Attribution:"P5-type15" by Tomruen - Jaap Scherphuis's Tiling Viewer applet. Licensed under CC BY-SA 4.0 via Commons - https://commons.wikimedia.org/wiki/File:P5-type15.png#/media/File:P5-type15.png

I'd say the force on the tool is only 3,000lbs and that the upper pulley and the low pulley behind the truck only change the direction of the force. If the setup was doubling the force then it would be halving the distance traveled by the tool, i.e. for every 1 foot taken up on the truck reel the tool would move only 6 inches. (Disregarding stretch in the line of course.)

Explanation of pulleys: Pulleys

Not new news, but first time I have seen this process.

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Surely this can be adapted to work with another process that has waste heat energy, maybe somewhere like a foundry that as a lot of waste heat energy that could perhaps be adapted to use this tech?

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Perhaps a solar oven. A few years ago I built a small model of a parabolic trough oven to experiment with making bio-char. At ~4ft across the highest temp I reached in the receiver was just over 200ºF and a good deal short of the ~500ºF I needed. Not sure how it would have to scale up to reach the temps the guy's process needs.

My model:

Thanks. Correct, but a speaker is what was requested from me as diver and involved on acoustics and electronics. Plus my curiosity on testing such.

 

For simple attention getter, I have used these very successfully for a long time :

 

---->

 

I believe the speaker cone immersed in fluid should propagate sound bidirectionally well enough; that is why I asked here. Some valid opinions are contrary and I respect them, but will proceed with the experiment anyway, as it is extremely simple.

PS Have you tried using the speaker above water now that it's bagged in oil? I can't stop thinking that the oil will soften the cone and so it won't oscillate except at the very center where the coil is connected. ??

Hi acme.

Details omitted, the purpose is to send unidirectional voice commands from a boat P.A. to a crew of divers to hook a rope that tows which selected item to another nearby location, and release, repeatedly; the speaker being by the end of the rope, and they do not want to purchase commercial equipment for only an hour of use. Am currently putting together the contraption with the speaker inside an oil filled intravenous bag (it's sturdier), no bubbles, heat sealed, cable trough its hose exit, sealed, all inside a flatty plastic box perforated both sides. Will let know success or failure.

Yes, could be done from the surface too with a floating proper speaker.

Details wanted. Anyway, you don't need voice or high fidelity for that or even a proper speaker. Morse code or some simple variant. 3 'sounds' (beep, click, clunk, etc.) for item #3 and so on.

Hi.

In your opinion, would a plain speaker propagate sound reasonably fidel underwater if lowered to 30m depth inside a hermetic plastic bag filled with light vegetable oil and if needed, a little air left in by the moving coil ?

What's the purpose of the speaker? I mean who will be listening and to what?

I don't understand how misinformation facilitates anything

I didn't present misinformation, I presented a joke. You not getting it or not finding it funny is out of my control.

Yeah, I know. I was just trying to keep simple for a poster who doesn't really seem to have clue.

I don't understand how misinformation keeps thing simple.

 

If the original poster or other person stands barefoot on a hill in a thunder storm and holds a long pointed metal rod up high there is a fair chance of attracting lightning and said lightning has energetic properties sufficient to extinguish quite a few life forms in the immediate vicinity.

Still not attraction of energy. You're facilitating a current flow, which has energy, but is not itself energy.