How GPS works (ciechanow.ski)
As the inaugural post, here's a great introduction to how GPS works. It starts with the basic physics and moves to implementation details, including some of the signal processing.
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As the inaugural post, here's a great introduction to how GPS works. It starts with the basic physics and moves to implementation details, including some of the signal processing.
Bertha was custom built to dig the State Route 99 tunnel under Seattle. It dug under the city (off and on) from December 2013 to April 2017....
Source: https://www.windytan.com/2012/11/the-sound-of-dialup-pictured.html?m=1
A Francis turbine runner being installed at Grand Coulee Dam, Washington state, USA. The damn has 27 Francis turbines of various sizes, plus 6 additional pump-generators, for a combined electrical generating capacity of 6,809 megawatts....
A friend recently pointed out that, despite most microwave ovens having a Popcorn function, most bags of popcorn specifically say NOT to use that function. It got me wondering how the Popcorn button works (or doesn’t work). Apparently there are several different approaches in common use....
The original design of the Sydney opera house featured roof sections with unique curves. This caused two major problems: (1) the structural analysis was very difficult, and (2) it made construction more expensive since they could not reuse construction details among the roof sections. Eventually the engineers realized they could...
We determined that the probable cause of the collapse of the Fern Hollow Bridge in Pittsburgh, Pennsylvania, was the failure of the transverse tie plate on the southwest leg of the bridge, a fracture-critical member (nonredundant steel tension member), due to corrosion and section loss resulting from the City of...
Hello lemgineers!...
Terrible diagram 1...
Is there any mechanical engineers? What you would wish to know when you were starting learning? What skills and topics you consider the most useful in mechanical engineering?...
cross-posted from: lemmy.crimedad.work/post/77168...
cross-posted from: lemmy.world/post/11869824...
cross-posted from: lemmy.crimedad.work/post/56030...
I’m thinking of just adding a potentiometer to a car headlight kit, this serves two purposes, 1. Allows me to have bright ass lights in place of my shitty Prius lights on long country roads while letting me turn down the brightness to not blind people in front of me. And 2: I think this would be a fun project to learn a little...
Under structural-only DP loading, a certain amount of deflection is allowed, and a certain amount of post-loading set displacement (permanent deformation) is allowed. Under the DP (design pressure) system, DP ratings are defined differently for structural, water leakage, and air leakage tests. This is a structural only test, so...
An animation of the world’s largest wind turbines...
A graphic comparing the size of various wind turbines...
I just started getting interested in synchronous machines, and this channel really did it for me. Great for anyone studying engineering, or anyone interested with a high school/first year university physics background.
Earlier today, Scottish adventurers Chris and Julie Ramsey were finally able to announce their completion of the nine-month, 17,000-mile “Pole To Pole EV” expedition, the world’s first drive from the 1823 Magnetic North Pole to South Pole....