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Canon EOS 6D - f/8 - 1/80 sec - 100 mm - ISO 2500
- for challenge Flickr group: Macro Mondays,
theme: Back In The Day
- A medical thermometer is used for measuring human or animal body temperature. The tip of the thermometer is inserted into the mouth under the tongue (oral or sub-lingual temperature), under the armpit (axillary temperature), or into the rectum via the anus (rectal temperature).
- Mercury-in-glass thermometers have been considered the most accurate liquid-filled types. However, mercury is a toxic heavy metal, and mercury has only been used in clinical thermometers if protected from breakage of the tube.
The tube must be very narrow to minimise the amount of mercury in it -the temperature of the tube is not controlled, so it must contain very much less mercury than the bulb to minimise the effect of the temperature of the tube- and this makes the reading rather difficult as the narrow mercury column is not very visible. Visibility is less of a problem with a coloured liquid.
In the 1990s it was decided that mercury-based thermometers were too risky to handle; the vigorous swinging needed to "reset" a mercury maximum thermometer makes it easy to accidentally break it and spill the moderately poisonous mercury. Mercury thermometers have largely been replaced by electronic digital thermometers, or, more rarely, thermometers based on liquids other than mercury (such as galinstan, coloured alcohols and heat-sensitive liquid crystals).
- The typical "fever thermometer" contains between 0.5 and 0.3 g of elemental mercury.
Swallowing this amount of mercury would, it is said, pose little danger but the inhaling of the vapour could lead to health problems.
The analog may not be dead and gone, but the company and even the state that produced this specimen is long gone.
P.S. The dust is authentic please do not attempt to adjust the picture. ;-)
It's my father's old slide rule. He had to learn to use it.
When i was in school i used a "modern slide rule" named "Casio..." ;-)
HMM!
Mouthpiece for KELLOGG phone.
Appears to be from the 30's and 40's. Carved on the front of the phone at the bottom ~ 2812H
Look at the first comment to see the whole phone.
Wrist watches and cell phones have all but replaced the old fashioned pocket watch chained inside your jacket pocket.
I used it a lot during the university years. Then I started working in a software house with computers.
For MACRO MONDAYS theme: "Back In The Day"
For 7 Days with Flickr theme: "Free theme"
For "Our Daily Challenge", topic: "Numbers"
02.04.2018 092/365
Way back when, this type of carbide lamp was used by miners. Calcium carbide gravel was put into the lower section, and water into the upper. The lever regulated the flow of the drips. Water on the carbide produced acetylene gas, which made its way out the nozzle in the center of the reflector. This one has an igniter built into the reflector for easy lighting.
While typically not used anymore for mining, these days it's retro cool for cavers to track down an old one and get it refurbed to work even better than it did... back in the day.
Macro Mondays – theme: Back in the Day
Incredible to think that future generations will see things like this in museums!!!
Happy Macro Monday
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Milk in glass bottles went the way of the dinosaurs many moons ago (well, there was no comet, just 'better' plastic containers). I kept one all these years out of nostalgia.
My entry for this weeks (2-Apr-2018) Macro Mondays 'Back In The Day' theme.
I was going to put a photo of part of a lichen covered old wooden telephone pole but they are not totally extinct yet (it's on my photostream before this shot)
[Taken with my Helios 44M lens, and using an extension tube]
_MG_0270.jpg
WIT - I set out to find something to photograph in sepia that had a nice tonal range to it naturally.
I had quite a bit of fun with this one. These are squares from a quilt my Mom is working on. In reality they are very bright and colorful, but in challenge land they are sepia.
I've been checking on my parents house while they are on vacation and decided to peek into my Mom's sewing room for something to use as a backdrop. I spied the Dick and Jane quilt she is working on and deceided that was IT. I thought a speia tone would like nice on these "old school" images. The texture of the fabric is a plus.
I played around with different arrangments and even used some squares not finished. I settled for this one. I played around with the tone of sepia too. I do not have PS on the computer I'm using so I used some in-camera sepia and some converted online afterwards.
Macro Mondays ~ Back in the Day
A treasure from the past, a gilded handle from a parasol, fashionable protection from the sun.
Taken for the Macro Mondays theme of 'BackInTheDay'
With the advent of LED the days of the old filament type bulb are long gone. Difficult to now find them in the shops.
HMM!
The reel of a video tape I found in the loft. Not the most original idea, but I've just had a clear out so it's a miracle this video is still here ...
Submitted for #MacroMondays #BackInTheDay.
Since May 2002, the Euro has been the sole currency of the Eurozone members including Austria, Italy, France, and Germany whose former currencies are pictured here.
While still legal tender in the United States, the well-worn 1907 "Indian Head" penny on the left is certainly a relic from "back in the day."
Small pocket slide-rule gifted by GE to engineers who worked on the Apollo space projects. This device was gifted to the grandfather of my son-in-law. There are three "Rocket scientists" in the family tree. Under 3 inches. Photographed in low light on black leather background.
Cylindrical Slide Rule.
When I was about fourteen I remember my maths master bringing in the first electronic calculator I had ever seen. It could do addition, multiplication, division and subtraction and had one memory. It cost around £300 in today’s money. By the end of my undergraduate studies I had a programmable scientific calculator that handled trig functions and statistics and cost only £30.
In the sixth form (i.e. years 12 & 13) we used slide rules and books of tables for calculation as calculators weren’t generally allowed in examinations. The slide rule I had was an advanced one, double-sided with trigonometric, log and exponential functions built in.
In many ways slide rules remain superior to calculators. They are fast, intuitive and less prone to errors of data entry. In experienced hands fairly complicated calculations can be done rapidly. They also make it easier to estimate answers and they teach you to handle the powers of ten in a calculation so that they become second nature. These skills become very important at university in a complex subject like Physics as you need to work out whether you are on the right track quickly when you are working a problem.
All slide rules work on the same principle. You can save doing a multiplication of two numbers by converting the numbers to their logarithms and then adding those together, finally converting back to ordinary numbers. In this way a multiplication becomes a simple addition which is way easier. Slide rules work by converting the log numbers into lengths on the rule and by sliding one bit of rule against another you can add the lengths (literally) and then read back the total length to convert back to the normal numbers.
The main drawback with slide rules is precision. An ordinary slide rule can work to about three significant digits whereas calculators work at eight or more. Of course precision doesn’t buy you much if you have entered the wrong figures into the calculator in the first place.
The precision is determined by the length of the slide rule: they’re normally about a foot long. Any longer and you have problems getting them in your briefcase :)
This is an image of my father’s precision slide rule. It gets around the length problem by spiralling the scale around a cylinder. The cylinder is in three parts that can rotate independently the scales on the top and bottom parts with a sliding sleeve in between. Collapsed down it is about six inches long, but the scale is equivalent to a slide rule about five and a half feet in length!
This is a picture of the top scale and part of the central sleeve, on top of some of the instructions for the device (an Otis King model “L” if you are a detailophile :) ).
I created this for the Macro Mondays Back In The Day theme this week. The exposed area of the scale is 1.3 inches so we are within the limits for the group - yey! Also for 7DWF :)
Thank you for taking time to look. I hope you enjoy the image! Happy Macro Mondays!!
[Indoors with light from window; tripod mount; remote release; focused in LiveView; VR off.
Processed in Lightroom with the colour balance set to accentuate the brown tinge in the instructions paper; exposure and contrast set to create a bit of ambience; rotated to give a stronger diagonal, and cropped.
Into Affinity Photo for some healing of dust spots; sharpened with a bit of Clarity filter and Unsharp Mask; slight, carefully constructed vignette to keep the highlights on the knurling top right, but to draw us in a bit. Then we’re done :)]
Wheel for transporting the ink ribbon and setting the direction of rotation.
Manufactured by Underwood Elliott Fisher Co., U.S.A.
Underwood Typewriter Company
Back in the days, when discipline was everywhere! (Or so we think!)
Playing around with the Olivetti Lettera 22 portable typewriter that used to be the "laptop" of the day. It is just fun to see it all work, or jam-up!
#MacroMondays
#BackInTheDay
Photo taken for #MacroMondays theme #BackInTheDay. A spyglass telescope *with a kind of pirate feel Arggggh!!! Now replaced by scopes and binoculars. HMM Everyone!
A simpering lady in a big hat requiring Hat Pins!! Back in the Day, the pins kept one's HUGE, Glamorous hat in place and COULD serve as a very good weapon to defend on'e honour, should the occasion arise!
In this case, The Day we are speaking of is the June 1912 edition of The Ladies' Home Journal- the "Bride's Edition" . The hatpins were collected by me many years ago. The largest pin is the one with the brass ring around the purple "thistle" stone. The ring is an inch in diameter. The other three are very tiny but the pins themselves range between 6" and almost a FOOT in length!!!
HMM and Happy Easter.
( under indoor zenith...)
La cámara que venía pegada a mi primer Helios, el 44K-4 Al parecer era el kit de la época. Un carrete que he disparado en dos veces, con un intervalo de un año...
Veremos si sale algo... Si tiene barba, será San José, y sí no, Amén ;-)
Heute in Vergessenheit geraten, der Externe Belichtungsmesser
Hier musste der Belichtungsmesser Leica Meter MR von 1963 herhalten.
Today forgotten, the external light meter
Here the light meter Leica Meter MR of 1963 had to serve.
Macro Monday
Back in the day
Camera: Sony 7M2
Lens: Sony FE 2.8/90 G OSS
This is an old key from back in the day as keys no longer look like this. This one is 2.25 inches long. It was photographed on an old wooden truck that belonged to my grandfather. Macro taken for MacroMonday - Back in the day.
For the Macro Mondays challenge "Back in the Day" (April 2nd 2018)
Something that has "fallen out of use".
You don't have to go far back to find some spectacular changes in what we use - the pace of change seems to be accelerating as technology brings us new things. The biggest "fall" in my own daily life, and I guess I'm not alone, is the wrist watch.
Back in the day only a rich man could afford to have the time with him, as a fob watch, or pocket watch hanging on a chain. Later the wrist watch developed, and we all could know the time. As they became cheaper you could collect several to suit your outfit! Powered by wind-up or battery they looked set to last and last.
But their fall from grace has been rapid! We all have a mobile phone, and its time keeping is more accurate than a wrist watch. And plenty of folks now sport a FitBit or similar (I do) and it can give you date and time, as well as heart-rate, exercise and sleep pattern tracking too. My lovely collection of wrist watches languish in a box now!
HMM!
My 2018 set: 2018 Macro Mondays
All the previous years of the challenge:
My 2017 set: 2017 Macro Mondays
My 2016 set: 2016 Macro Mondays
My 2015 set: 2015 Macro Mondays
My 2014 set: 2014 Macro Mondays
My 2013 set: 2013 Macro Mondays