Some Day, You’ll Have a Telephone with a Screen and Be Able To Dial a Book

Re:Some Day, You’ll Have a Telephone with a Screen and Be Ab... by walrus01 on Sunday January 13, 2019 @09:33AM (#18896798)

It is, but rather difficult and expensive for short to medium distances. Submarine power cables are often HVDC.

https://en.wikipedia.org/wiki/Pacific_DC_Intertie

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Re:Some Day, You’ll Have a Telephone with a Screen and Be Ab... by howard941 on Sunday January 13, 2019 @11:01AM (#18897147)

Great article. The thing's grounding system is lustworthy:

The Sylmar grounding system is a line of 24 silicon-iron alloy electrodes submerged in the Pacific Ocean at Will Rogers State Beach[4] suspended in concrete enclosures about one meter above the ocean floor.

The grounding system at Celilo consists of 1,067 cast iron anodes buried in a two-foot trench of petroleum coke, which behaves as an electrode, arranged in a ring of 2.02 mi (3,250.87 m) circumference at Rice Flats (near Rice, Oregon), which is 6.6 mi (10.6 km) SSE of Celilo.

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Re:Some Day, You’ll Have a Telephone with a Screen and Be Ab... by gtdawg on Sunday January 13, 2019 @07:17PM (#18899610)

Incredible! I've always been fascinated when driving by the Sylmar station (many times in my life) and never knew that I was driving by connecting infrastructure when on PCH in that area.

And even more interesting is they are replacing/replaced it! https://www.circlingthenews.com/terminus-of-sylmar-ground-re...

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Re:Some Day, You’ll Have a Telephone with a Screen and Be Ab... by Tempest1981 on Sunday January 13, 2019 @01:13PM (#18897852)

Cool! Which led me further down the rabbit hole: https://en.m.wikipedia.org/wiki/High-voltage_direct_current

- HVDC uses voltages between 100 kV and 1,500 kV.

- HVDC can be cheaper for 500+ mile runs

- HVDC allows power transmission between unsynchronized AC transmission systems

- Recent advances make UHVDC feasible (800kV+)

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Re:Some Day, You’ll Have a Telephone with a Screen and Be Ab... by Ruphin on Sunday January 13, 2019 @02:05PM (#18898114)

Great excuse to get introduced to this wonderful engineering youtube channel (no affiliation) https://www.youtube.com/watch?v=DFQG9kuXSxg

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