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Description
Wakes, Coherent Structures and Turbulence ... Vol 3 Non Equilibrium Systems and Irreversible ProcessesUse Preview to SEE A TABLE OF CONTENTS Vol3 .. Adventures in Applied Topology. Continuous topological evolution can be used to encode non equilibrium thermodynamic systems of distinguishable particles and their evolution by means of dissipative irreversible processes. Such methods are universal and apply to systems from the microscale to the cosmological scale. This volume uses topological techniques to describe persistent wakes and other
Use Preview to SEE A TABLE OF CONTENTS Vol3 ..Adventures in Applied Topology....Continuous topological evolution can be used to encode non equilibrium thermodynamic systems of distinguishable particles and their evolution by means of dissipative irreversible processes. Such methods are universal and apply to systems from the microscale to the cosmological scale. This volume uses topological techniques to describe persistent wakes and other topologically coherent but deformable strutures in fluids as thermodynamic states far from equilibrium and of Pfaff Topological dimension 3. The last part of the book is devoted to an explanation of Turbulence in terms of continuous, but irreversible, topological evolution in a domain of Pfaff Topological dimension 4.
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4.1 ★★★★★
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Product Reviews
★★★★★ 5
Quality Printer
Color: Black, Style: ET-2800-B, Pattern Name: Printer
Wonderful multi purpose printer. I bought this months ago and finally got it set up. Set up was easy. Love that the printer is so light weight and fairly compact that I can move it wherever if needed. The supply of ink that came with it was awesome. The ink goes a long way. I have printed out a lot of photos on this printer and the quality has been very good. I have not encountered any paper jams. The photo printing has not been smudged nor has the color been uneven. From documents to photos this little printer does it all and does it very well. When my work printer dies I will be replacing it w another Epson Eco Tank for sure.
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Reviewed in the United States on May 15, 2026
★★★★★ 4
Printing is great, wifi is a problem (I figured out how to make it work!)
Color: White, Style: ET-2800-W, Pattern Name: Printer
I was on the fence about buying this printer because most of the 1 star reviews all said the same thing... "The Wifi would not work"
So I followed the instructions, Turned on the print, downloaded the IOS app, connected to the printer via Bluetooth, installed the ink, initialized the printheads. While that was going on, the app asked me to setup the wifi. a List of SSID's came up and I selected the one I wanted. I put in the password and it connected and the icon on the printer turned blue. I have a Unifi setup and I could see that the printer connected to access point #3 @ 2.4ghz and got an ip address. I locked the IP address to the printer.
(For my instructions to work for you, you need to make a reservation or lock the ipaddress that your DHCP server provided to the printer. ) If you don't do this, you will get a different address every time you turn the printer on and the computer and app will not be able to find the printer.
When the initialization was complete, the app on my phone said it could not connect to the printer. I decided to try to connect to a computer and come back to the phone app. I downloaded the software package from Epson and ran it. When it went to connect to the printer it could not find it and brings up a list of troubleshooting steps that are not likely to do anything.
There are videos about this problem and they are all useless. I am an IT professional with 26 years of experience. I am not going to unplug the printer and wait five minutes, I am not going to re-boot my router, I have a Unifi network environment with over 150 devices connected... (I have great wifi coverage, I am not moving my printer anywhere) My network works just fine, this printer is the issue!
So at this point, I know that the printer IS connected to my wifi and it got an IP address. This is not a wifi problem as everyone seems to think it is. It is an issue with the Epson software.
I decided to try to install it via the windows printer installer. I selected install via TCP/IP and put the ipaddress that my Unifi system provided to the printer. Windows found the printer and since the Epson app had already installed the drivers... just asked me what drivers I wanted to use. The ET-2800 showed up on the right hand side of the screen. I selected it, it installed and I was able to try a test print. It worked fine. I can print from my computer to the printer via the network.
Next was the phone app. The phone app has the option to find the printer via the IP address. I put the IP address in and it found the printer. The phone app works now too.
So, It took me some time to get this working, it should not have taken any time at all if the software worked correctly. The printer is really nice, it is a shame that the software is so bad when it comes to connecting to the printer.
So if you decide to buy one of these printers, save yourself the headache and just install using the ip address, it is quick and easy that way and it just works. I would have just purchased an HP printer, but I did not want to deal with all the issues of their subscription ink service. I feel like the cost of ink makes this printer worth the hassle of getting it to work.
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Reviewed in the United States on December 2, 2024
★★★★★ 5
Handles Photo-Quality Prints, Versatile Connectivity
Color: Black, Style: ET-2800-B, Pattern Name: Printer, Color: Black, Style: ET-2800-B, Pattern Name: Printer
I've had this printer for a whole year now. I was on a severe budget, looking for a photo-quality printer that didn't require Wifi in this digital age- because I quite frankly can't afford my own Wifi connection. My rink-a-dink laptop had to be set up with the software at my library, and an extra cord purchased.
All that said, I mostly print from my phone, because the software app is a bit easier to ensure that I get the highest quality setting. Laptop loves to be a snot about it. The blutooth feature, or "wifi direct", has a way about it, and as soon as you figure out what it wants, it gives minimal problems.
It functions exactly as if a printer had wifi on it, believe it or not.
What sold me on this model was the ability to do all of that, and adjust for different situations, seeing as other brands DEMAND constant wifi connectivity (lookin' at BROTHER, maybe Canon, too), and the long lasting ink tanks- I've printed hundreds of pages, and being a gothic/horror artist, at least a good part of the time, black is the only color even half gone.
What horrified me the most about printer-shoping dropping a lot of money (hundred plus is a lot over here, man) and not getting the prints to look like my work. Well, fear not. The attached pictures are why I made this review, to hopefully ease the anxiety of others. I make digital paintings, and use high DPI for high quality, and also the cutest micro-stickers you've ever seen. Prints come out clear, even if they can sit in the tip of my finger.
Yes, there are probably better printers. Maybe they're faster, and have even better connectivity, and have more bells and whistles. I specifically did not want to pay for those things, so, I'm very happy there's options.
It's not perfect, no, because every now and then, I get what I call a "special edition", where my printer has decided to multi-color barf out the last third of the page. One time it randomly printed in black and white. Well, that's no big deal, my stuff tends to look great in monochrome. Every now and then I get a low quality print; things just look a bit fuzzy. I'm not happy about that, but, you clean the heads, and print something simple and toony, and it has never done it twice in a row. Alignment has been off only one time, and I put the printer away after every session.
It occurs to me that people pay good amounts of money for printers that do that sort of thing anyway, so... Printers gonna printer, no matter where you try to hide.
Overall, I'm happy and relieved. I hope it lasts me a good long time. (Streetratt on Kofi, by the way.🖤 )
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Amazing value and performance — perfect everyday home printer!
Color: Black, Style: ET-2800-B, Pattern Name: Printer
After lots of research and comparing ink costs, I finally purchased the Epson EcoTank ET-2800 Wireless Color All-in-One Cartridge-Free Supertank with Scan and Copy and it has been one of the best tech investments I’ve made for my home setup. Whether I’m printing documents, photos, homework, or creative projects, this printer delivers consistently reliable results without the usual stress over ink costs.
Right out of the box, setup was surprisingly easy. Epson’s app guided me through the wireless connection, and within minutes the printer was connected to my Wi-Fi and ready to go. The initial filling of the ink tanks took a few extra minutes, but the included bottles were clearly labeled and simple to use without mess.
The print quality has exceeded my expectations for an all-in-one home printer:
- Documents: Crisp, clean text — perfect for school assignments, work documents, letters, and recipes.
- Photos: Bright, colorful prints with decent detail (especially when using good-quality paper).
- Graphics & Crafts: I’ve printed worksheets, planner pages, labels, and even small art pieces — and everything looks sharp and vibrant.
- The speed is solid for its class. It’s not a professional office machine, but it doesn’t feel slow for everyday use.
Cartridge-Free Ink — Game Changer
This is the real highlight:
- Cartridge-free Supertank System:
Instead of tiny cartridges that run out in no time, this printer uses large refillable ink tanks — which means massive savings on ink long-term.
- Low Ink Cost:
You really feel the savings after your first few refills. I used to go through cartridges quickly, but now I only refill every few months — and even then, it’s affordable.
The included ink bottles provide a ton of pages, and you can easily track levels through the transparent tanks so you’re never caught off guard.
The wireless setup works smoothly. I can print from:
- My phone (via Epson app, AirPrint, or Google Cloud Print)
- My laptop or tablet
- Directly via Wi-Fi without cables
No more plugging USB in every time — super convenient.
The scanner is quick and easy to use:
- Scan photos
- Scan documents straight to email or phone
- Make copies without touching a computer
The scan quality is clear and accurate — ideal for digitizing receipts, forms, or school worksheets.
Pros:
- Huge savings on ink long-term
- Excellent print quality for text and color graphics
- Easy wireless setup and mobile printing
- Transparent tanks — see ink levels at a glance
- Scanner and copier work well for everyday tasks
- Quiet operation compared to older printers
Minor Notes
- Initial setup takes a bit longer because of ink filling — but it’s worth it.
- Photo prints are good for casual use, though super high-detail photography will still look better with dedicated photo printers or labs.
- No automatic document feeder (ADF) — so multi-page scanning requires manual pages.
The Epson EcoTank ET-2800 has transformed my printing experience. It’s affordable to run, produces great everyday prints, and the wireless features make it super convenient for the entire household. If you’re looking for a home printer that won’t drain your budget on ink, this one is absolutely worth it.
Whether you’re printing school documents, work files, planners, photos, or craft projects, this printer does it all with ease — and saves you money over time.
Highly recommended for home use — practical, efficient, and budget-friendly!
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Reviewed in the United States on February 5, 2026
★★★★★ 5
Excellent Investment!
Color: Black, Style: ET-2800-B, Pattern Name: Printer
I have had this printer for two years now. I purchased it to do invitations and signs for my Daughter's baby shower. I designed an invitation, printed more than sixty copies with address labels, return address labels, numerous signs, games
and raffles tickets. I used it again for the Baby's 1st Birthday same amount of items. I have not had to fill the colored ink in over 2 years. I have filled the black. My husband also uses it for work and I've printed several other projects including pictures. Everything has always exceeded my expectations. For the price you get excellent quality. I find the software easy to use and update.
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Reviewed in the United States on June 11, 2026