View allAll Photos Tagged Slide
Australian Electric Transport Museum, St Kilda
Easter Sunday 31 March 1991
Copyright Steve Guess MMXXI
Quote by Renee Moore
@teachmoore
teachingquality.org/content/do-we-value-people-or-just-co...
Slide by Bill Ferriter
The Tempered Radical
@plugusin
up to the mid 1970's high school students in our school were still taught to use the slide rule for mathematical computations. most kids nowadays no longer know what this is
After a long day, including driving from Suva to Nadi and various events in town I realised I hadn't taken any photos. This is a rather strange looking slide that was part of the children's playground in the hotel in Nadi.
(322 of 365 in 2022)
Taken at the Big E, Eastern States Exposition in West Springfield, MA.
I remember sliding down this when I was a kid..many moons ago LOL
Statistic from: Education Week, Children Trends Database
April 28, 2013
Retrived from www.statisticbrain.com/high-school-dropout-statistics/
Slide by Bill Ferrriter
The Tempered Radical
@plugusin
Original Image Credit: Day 8 by mollyollyoxenfree
www.flickr.com/photos/mollydon/5344823829/sizes/l/
Licensed Creative Commons Attribution on April 11, 2011
creativecommons.org/licenses/by/3.0/us/legalcode
Slide by Bill Ferriter
The Tempered Radical
@plugusin
EI 100, F5.6 1/125
Original / real life Green to Bluish purplish
Purple(slide) to green
Yellow (bars) to pink
Red remains...a bit dull
The staff workspace in the Slide Library on the first floor of Manchester Polytechnic's Righton Building in 1991.
He was sitting under the footbridge about 6 feet from me. They seem to feel secure with some barrier between us. This time as I shot, a man with a stroller crossed the bridge and the noise and activity was too much. Two shots and he flew off.
Data Source: Horace Mann Educator Survey, June 2013
Slide by Bill Ferriter
The Tempered Radical
@plugusin
The VEX UGH SLIDES are a platform puffy slip on shoe with a fluffy furry lining.
2 colorways for VIVID and 2 colorways for PASTEL. One is a print pattern while the other is solid. These slides are rigged for Reborn, Peach, Genx, Kupra, Legacy, and Legacy Classic.
The original packs include 1 pair of slides and a color change HUD while the Fatpack contains the 1 original pair along with an opened boxed decor pair. Get the MEGA which contains errthang!
Pick these up at the Tres Chic Event now thru November 12th. Your uber awaits dahlin♥
Uber: ♥ Tres Chic
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WTGI TV slide from 1986 showing the station's coverage area used during
sign-ons and sign-offs. WTGI's transmitter was originally in Glassboro NJ, but was later moved to the Roxborough tower farm in Philadelphia.
This is a photograph of a real slide rule.
Although they look complicated, the principle of operation is simple.
The device is used to add the log (logarithm) of numbers.
Adding (or subtracting) the log of numbers has the same effect as multiplying (or dividing) the numbers. The ability to quickly perform multiplication or division was the key to the usefulness of the slide rule.
The sliding part is used to perform the addition. Move it a certain distance, and all the printed numbers along the length have been moved along that same distance, obviously. Effectively they have all been "added to" by the same amount.
The "conversion" from number to log was done simply by labeling a logarithmic scale with the corresponding number. Consequently the scales look uneven, with numbers "bunched" towards one end.
All the other scales are the equivalent of lookup tables. This set of scales can be used to determine 1/x, x squared, x cubed, log x and basic trigonometry functions such as cos, sine, etc.
Slide rules were almost universally used - from their invention in th 1600s until the 1970s - before pocket calculators became available and affordable. Almost everyone had one. They also needed to be constructed to high standards of accuracy to be useful. This one, although only plastic, clearly has machined/milled sliding surfaces to produce a smooth but snug fit. The combination of high manufacturing costs and a large, predictable, steady market made them not very profitable items to produce.
Blundell Harling - who made this model in Britain - continue to operate, making quality drafting and navigational aids such as chart plotters.
A special type of circular slide rule - the "whiz wheel" flight computer - is still widely used in aviation. Presumably, with potentially many lives at risk, it is reassuring to have a reliable backup device that won't suffer from software crashes or lightening strikes.
Wikipedia references:
- TI-30
- HP-35
This image is part of two overlapping sets, one focusing on Calculators (including Sliderules) and the other focusing on CGI Modelling and Rendering.