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Description
Gauge Theory and the Geometrisation of PhysicsThis Element is broadly about the geometrization of physics, but mostly it is about gauge theories. Gauge theories lie at the heart of modern physics: in particular, they constitute the Standard Model of particle physics. At its simplest, the idea of gauge is that nature is best described using a descriptively redundant language; the different descriptions are said to be related by a gauge symmetry. The over arching question this Element aims to
This Element is broadly about the geometrization of physics, but mostly it is about gauge theories. Gauge theories lie at the heart of modern physics: in particular, they constitute the Standard Model of particle physics. At its simplest, the idea of gauge is that nature is best described using a descriptively redundant language; the different descriptions are said to be related by a gauge symmetry. The over-arching question this Element aims to answer is: why is descriptive redundancy fruitful for physics? I will provide three inter-related answers to the question: Why gauge theory?'', that is: why introduce redundancies in our models of nature in the first place? The first is pragmatic, or methodological; the second is based on geometrical considerations, and the third is broadly relational.Shipping Notes
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★★★★★ 5
Confirmed copper by measurement
Size: 2 Colors each 10FT, Style: 10AWG, Size: 2 Colors each 10FT, Style: 10AWG
There are many fake "copper" wire products on Amazon these days, which are not actually copper. Some are even supposedly tinned, but what is inside may be an alloy of copper like brass, so you can't even trust color or color of the cut ends of the wire. This wire, as of April 2021 at least, is actually copper, per 4 wire resistance measurement using Kelvin clips. A 10 foot piece of 10 gauge should read .01 ohms, and this wire does.
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Reviewed in the United States on April 26, 2021
★★★★★ 5
The wire itself is perfect for finding its way through the contours of my ...
Size: 2 Colors each 10FT, Style: 10AWG
10ga. wire in red & black colors as advertised. Product came quick & unharmed. The wire itself is perfect for finding its way through the contours of my vehicle becaue of its "rope-like" feel (unlike a stiff wire). Would buy again, because so far, so good. Hope that helps.
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Reviewed in the United States on February 22, 2018
★★★★★ 5
Good purchase!!
Size: 2 Colors each 10FT, Style: 10AWG
Just what I was looking for!!
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Reviewed in the United States on February 15, 2021
★★★★★ 5
Good product
Worked for what I needed. Fit great and easy to install.
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Old Merc Inline 6s - 1500, 1400, 1250, 1150
This is the second time I purchased from them. The kits are good quality, and impeller is durable. Pictures is the initial one I purchased from them two seasons ago. It had hundreds of hours on it, plus me accidentally cooking it for 3 mins without water hooked up to the engine - which is why I purchased it again. Given 2 seasons of use and my recent screw up it held up well.
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Reviewed in the United States on August 11, 2024