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Description
Lagrangian & Hamiltonian MechanicsThis book takes the student from the Newtonian mechanics typically taught in the first and the second year to the areas of recent research. The discussion of topics such as invariance, Hamiltonian Jacobi theory, and action angle variables is especially complete; the last includes a discussion of the Hannay angle, not found in other texts. The final chapter is an introduction to the dynamics of nonlinear nondissipative systems. Connections with other
This book takes the student from the Newtonian mechanics typically taught in the first and the second year to the areas of recent research. The discussion of topics such as invariance, Hamiltonian-Jacobi theory, and action-angle variables is especially complete; the last includes a discussion of the Hannay angle, not found in other texts. The final chapter is an introduction to the dynamics of nonlinear nondissipative systems. Connections with other areas of physics which the student is likely to be studying at the same time, such as electromagnetism and quantum mechanics, are made where possible. There is thus a discussion of electromagnetic field momentum and mechanical"hidden" momentum in the quasi-static interaction of an electric charge and a magnet. This discussion, among other things explains the"(e/c)A" term in the canonical momentum of a charged particle in an electromagnetic field. There is also a brief introduction to path integrals and their connection with Hamilton's principle, and the relation between the Hamilton-Jacobi equation of mechanics, the eikonal equation of optics, and the Schr
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4.1 ★★★★★
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Product Reviews
★★★★★ 5
Attractive design+color, slender profile, excellent functionality, budget price (8 outlet model)
Color: Black, Size: 8 Outlet, Style: Outlets Only, Color: Black, Size: 8 Outlet, Style: Outlets Only
This is exactly what I wanted. (It’s even better - slimmer, easier to handle cord, than the Belkin in this design style.) Perfect fit for the lower shelf of my night table. To charge my phone, iPad, Bluetooth headset, and the like (plug my lamp into it as well, for convenience-sake not surge protection). The 8 outlets are perfectly spaced/placed.
I briefly considered the model with the USB cord plugs directly into the unit, but for me, at this point, for this purpose the extra price didn’t seem worth-it. My USB charging adapters aren’t that bulky, and with this design they can be plugged side-by-side.
I do like the convenience of that design, with the USB plugs, and will likely get it in the future, and move this one to either my home-office, or dressing area. So, this “basic” one wouldn’t be wasted. And meanwhile it’s a great budget option that sacrifices none of the design, style, or function. It’s attractive, useful, well conceived/designed and executed. For well under $20. Nice color too.
Would be perfect anyplace. Though I’d think this more basic model isn’t intended for multiple multimedia devises all in one - looked like they had more suitable models for if you wanted to say plug in your TV, your game console, your streaming and/or cable - do they still call it that? - box/devise, your speakers with or without subwoofer, along with your modem and WiFi-router all into one. Someone, who works with high end electronics and/or an electrician/engineer correct me if I’m wrong. But I’d get a model - of this same device if there’s one of suitable capacity - which that’s meant to handle such a load for my entertainment center. I think another reviewer talked about joules and capacity, I think it was for this model. Or at least this manufacturer.
Though I don’t see it being convenient for travel - not sure about that question there, maybe more convenient than some other styles; certainly not anywhere that’s not 120V, and I doubt that at this level it’s sufficient protection for anywhere with radically irregular electrical/voltage supply, not just the occasional spike, like say - Malawi Africa for a random example out of personal experience, for something like that you’d actually have to spend money and get a proper UPC, not to mention bulky-bulky, but that’s not relevant here, for this, just this isn’t something like that. This is for use with stable electrical and voltage supply, should give perfectly adequate protection for the occasional spikes and surges such as those following a power outage, within the design specification.
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Reviewed in the United States on April 13, 2019
★★★★★ 5
Excellent value from a reliable & known brand
Color: Black, Size: 8 Outlet, Style: Outlets Only
I've always bought surge suppressors and the like from APC. They're very reliable and well-made. The equipment protection guarantees are great, too. This strip is not as sturdy as some other APC strips, but it is also less expensive. Perfect for basic home use (a TV, Xbox, etc). I'd get a higher up APC model if you're protecting a workstation computer or high end audio gear. But for basic stuff, this strip is a good value. I'd trust this far more than a lesser known brand.
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Reviewed in the United States on March 17, 2021
★★★★★ 5
Works well in home office.
Color: Black, Size: 8 Outlet, Style: Outlets Only
Nice layout of outlets. Sturdy construction. Flat electrical plug. Works well in home office.
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Reviewed in the United States on February 24, 2025
★★★★★ 5
APC is a trusted brand - this guy is beautifully thought out!
Color: Black, Size: 8 Outlet, Style: Outlets Only
It's hard to get excited about a power strip- but when they designed this one, the engineers at APC hit it out of the park! I love how the 'wall warts' (those odd klunky AC/DC power adapters that so many devices come with nowadays) have their own spot on this unit, and do not block out the remaining plugs that regular AC power cords (3 prong grounded) require. This is VERY important! Most of the competition has you forfeiting one or more plug locations when a wall wart blocks you out! There are on/off status lights (green means OK) and and on/off SWITCH. For the modest and reasonable cost, you get great surge protection. I have used APC products for many years, particularly fond of their backup UPS power supplies. I plan to buy more of this model for my apartment. The quality is there, a nice heavy line cord to connect to the AC power, and better-than-average build quality. Slick!
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Reviewed in the United States on March 15, 2019
★★★★★ 4
It works but not so sure about the EMI/RFI noise filtering claim
Color: Black, Size: 8 Outlet, Style: Outlets Only
I only buy surge protectors that have EMI/RFI noise filtering. I have a sensitive short wave radio with a sleep timer that I use when going to sleep. It has a rechargeable battery so you can either use it plugged in or on battery power. I've always had static on the radio when it was plugged into this surge protector. Cords generally do cause interference in radios so I thought nothing of it. But it started to get really bad. So I took one of my old tripplite surge protectors with emi/rfi noise filtering and plugged the radio into that. No static or interference on the radio at all. I went to APC's website to see if this model has EMI/RFI and it looks like it does....but it sure doesn't work well on mine.
I don't want to disparage APC. I have several of their surge protectors. Just bought the big P12U2 model they have and love that one. I think it just has better circuitry than this budget model. I'm using the P12U2 on my TCL 55" TV that was flickering and was glitchy turning on and off with a different surge protector from another company. Anyways, the ACP P12U2 works great and appears to have excellent noise filtering. Just wish the P12U2 had a flat plug because I bought it to use for my computer, but couldn't because I couldn't push my desk up against the wall with that straight out plug. Anyways, I've strayed.
This is a good basic surge protector I suppose. Would not recommend it for sensitive electronics prone to interference. Then again, maybe I just had a bad one, who knows. APC is a great brand. All my surge protectors are either APC or TrippLite. Can't go wrong either way.
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Reviewed in the United States on January 28, 2022
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