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Not- und SicherheitsbeleuchtungDas Standardwerk zu Not und Sicherheitsbeleuchtung! Im Mittelpunkt stehen die lichttechnischen und elektrotechnischen Anforderungen an Not und Sicherheitsbeleuchtung. Einen groen Bereich nehmen dabei die vielfltigen europischen und nationalen Normen, Vorschriften und Gesetze ein. Aufgrund der massiven nderungen im Bereich der Notbeleuchtung seit der Vorauflage (2017) wurde das Buch komplett berarbeitet. Umfassende Vernderungen erfolgen insbesondere
Das Standardwerk zu Not- und Sicherheitsbeleuchtung! Im Mittelpunkt stehen die lichttechnischen und elektrotechnischen Anforderungen an Not- und Sicherheitsbeleuchtung. Einen großen Bereich nehmen dabei die vielfältigen europäischen und nationalen Normen, Vorschriften und Gesetze ein. Aufgrund der massiven Änderungen im Bereich der Notbeleuchtung seit der Vorauflage (2017) wurde das Buch komplett überarbeitet. Umfassende Veränderungen erfolgen insbesondere durch neue Möglichkeiten und deren Umsetzung durch LED-Technik, die heute in diesem Bereich fast ausschließlich zum Einsatz kommt. Komplett neu gefasst wurden zudem die "Lichttechnischen Anforderungen". Neu hinzugekommen sind zudem Aspekte wie Sammelplätze, Fluchtwege im Außenbereich, die Fluchtweg-Kennzeichnung für Menschen mit mobiler Einschränkung sowie Flucht- und Rettungspläne. Alle aktuellen Normen, Vorschriften und Richtlinien wurden berücksichtigt. Dieses Buch behandelt - welche europäischen und nationalen Vorgaben aus Produktrecht, Arbeitsschutz und Baurecht sowie welche elektro- und lichttechnischen Normen zu beachten sind, - was zentrale Grundlagen und Begriffe der Lichttechnik sind und bedeuten, - welche lichttechnischen Anforderungen z.B. bei Flucht- und Rettungswegen bestehen, - welche Vorgaben für Sicherheitsbeleuchtung gelten, - wie die Vorgaben für Notleuchten richtig zu interpretieren und umzusetzen sind, - wie optische Sicherheitsleitsysteme mit Not- und Sicherheitsbeleuchtung zusammenspielen.
| EAN: | 9783810105844 |
| Farbverschnitt: | Generell werden die Bücher ohne Farbverschnitt geliefert, auch wenn die Abbildungen einen Farbverschnitt zeigen. |
| Auflage: | 3., überarbeitete Auflage 2023, 23003 |
| Erscheinungsjahr: | 23.05.2023 |
| Produktform: | Kartoniert |
| Titel der Reihe: | de-Fachwissen## |
| Autoren: | Weis, Bruno & Finke, Hans |
| Auflage/Ausgabe: | 3., überarbeitete Auflage 2023 |
| Seitenzahl/Blattzahl: | 251 |
| Keyword: | Brandschutz; LED; Leuchten; Lichttechnik; Notbeleuchtung; Sicherheitsbeleuchtung |
| Fachschema: | Beleuchtung~Fotografie / Beleuchtung~Licht (Beleuchtung)~Elektroberufe / Elektrohandwerk~Elektrohandwerk~Elektroinstallation~Installation (Bau) / Elektrohandwerk~Technologie |
| Fachkategorie: | Technologie, allgemein~Elektronik, Nachrichtentechnik, Elektrikerhandwerk |
| Thema: | Verstehen |
| Text Sprache: | ger |
| Verlag: | Hüthig GmbH, Hthig GmbH |
| Länge: | 211 mm |
| Breite: | 152 mm |
| Höhe: | 17 mm |
| Gewicht: | 378 gr |
| Genre: | Mathematik/Naturwissenschaften/Technik/Medizin |
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4.5 ★★★★★
Based on 482 reviews
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Product Reviews
★★★★★ 5
Worth the money (especially if you wait for a Prime Day sale!)
Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited
I've had my paperwhite for about a month now, so I guess it's as good of time as any to properly review it.
This is my first paperwhite. I got a b&n Nook Color back in 2010 for Christmas, which has served me really well over the years. However, it reached the point recently where it wouldn't hold a charge and so I found myself in the market for a new e-reader.
I was drawn to the paperwhite because it was waterproof and would hold a long charge. I was a little leery about the black-and-white only nature of the paperwhite, especially as my previous ereader was in color, but so far it hasn't been an issue. I used to read comics on my Nook but haven't read digital comics in a few years, preferring print. This might be something someone who does read books with illustrations would want to take into consideration.
I really appreciate the long battery life of the paperwhite. I've had it for about a month and have only had to charge it once (and it had only gotten down to about 48% so I probably could have pushed it further than I did). I've been able to read several books with the battery barely being effected. The biggest draw on battery life seems to be using the store or trying to use the rudimentary Web browser.
I've been very impressed by the light, too. My Nook was impossible to read on in some lights, which hasn't been an issue at all with the paperwhite. I usually have the brightness adjusted to about the halfway point for casual reading, and brighten the screen if necessary. The brightest option COULD be a little brighter, but that's nitpicky.
The device itself is VERY lightweight and portable. I have dvd cases that weigh more. My phone certainly weighs more. It's not too big or bulky to hold; I can easily hold it with just one hand.
The only draw back I've really noticed is that the touchscreen is a little sensitive. Sometimes when I'm trying to scroll through my library, I end up selecting a title I wasn't trying to open. Other times, I might scroll through several pages by accidently hitting my thumb on the screen when holding the device. Buy this is a very minor inconvenience.
Also, I bought the option with "special offers". They in no way to impede my reading experience. The ads show up on the main screen when the device is not in use, or in a small banner along the bottom of the "home" menu. That's it. No ads popping up during your reading.
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Reviewed in the United States on August 10, 2019
★★★★★ 5
Impressive Product Overall
Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited, Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited
I bought the Kindle Paperwhite 2018 edition, 8 GB of storage with Special Offers for myself because up until I received it, I've been reading with the Kindle app on my Samsung Galaxy S9 phone instead. While the Kindle app on my phone was great, my eyes were really straining on the smaller screen and I'm a voracious reader. I was looking for something in a larger screen, but won't utilize the other feature and capabilities of a tablet, and beyond Kindle have no use for one at all. Overall, I'm highly impressed with this little Kindle device.
I want to start by mentioning the Special Offers, as in all the reviews I read and heard about the device, the Special Offers weren't more than a footnote. They aren't intrusive at all, it's just on the main screen and that's it. They don't interrupt reading at all, and the Kindle Paperwhite personalized my Special Offers based on my reading, Kindle browsing history, and purchases so a lot of the ads that come through are actually interesting to me and in fact one or two of the ads have made me drool enough to purchase whatever book they were trying to peddle. That is definitely a plus, and yet a terrible thing because I AM such a voracious reader and I know I'm going to be spending a lot more money on Kindle books but at least the majority of the ads are tailored to the type of books I enjoy reading. I'm definitely not complaining about the Special Offers, nor will I pay to have them removed when the next ad that is displayed on my Kindle's screen might be a book I might like. Some may find the ads annoying just because it's an ad, but I find it enjoyable and definitely not intrusive in the slightest.
The battery life - the Kindle came out of the box at 60% battery life and took virtually no time at all to charge to 100% on my phone's quick charger. I spent from 3 pm until almost 11 pm doing nothing but reading (when I said I'm a voracious reader, I meant it). My Kindle went from 100% battery to only 81% and from 11 pm until 8:30 am, only lost 2% battery. That is absolutely amazing to me and worth every penny I spent on the Kindle. I can't do that with my phone or a tablet; those batteries drain so quickly but this Kindle will last me all day long and still won't need to be charged at night. That's such a huge plus for a reader like me!
The light on the Kindle Paperwhite is amazing, and even in my dimly lit room I don't need to have it much above 5 or 6 on the brightness. Although my phone boasts an almost 6" screen, truly the Kindle screen is much larger and thus much easier to read especially with the matte finish. My eyes strain far less on the Kindle even with almost a solid 8 or more hours of nothing but reading. This Kindle screen isn't too large, but it's definitely not too small either, it's just right. It's almost like you have a physical book in your hand, as far as relative size goes, though a little larger than your common paperback.
I don't use Audible because I can't pay attention to a book when I'm listening to it being read to me, so the 8 GB of storage (more like close to 6 GB usable), holds plenty of books for me. I only have just a handful downloaded at any one point in time, but even the 10 or so books I have downloaded at once still doesn't take the storage space down anywhere near the 5 GB mark. So 8 GB is more than plenty for just regular printed books if you're like me and suddenly develop a case of A.D.D. when it comes to audiobooks.
The speed of the device is just fine too. I won't say it's excellent compared to my Galaxy S9, but that's apples and oranges. For an e-reader the speed is great. There is just a little lag, but not enough to become anything beyond just barely noticeable. It's not annoying at all. It takes maybe a second or so to respond. When turning the page, even reading at a quick pace I'm able to keep up with the story on the next page from where it left off without interruption.
The overall build quality is excellent. It is light weight and thinner than I expected. Yes it's plastic, but it doesn't feel cheaply made. It's comfortable to hold in one hand, or two if you like. The only thing I would change about the build is the power button - maybe I'm just used to them being on the right side of the device near the top... but the only thing I would change is the placement of the button.
Overall, I'm very satisfied and impressed with my purchase. This was an excellent buy, and my next Kindle purchase is going to be one for a couple other people in my life who read just as voraciously as I do.
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Reviewed in the United States on December 25, 2019
★★★★★ 5
Excited to read!
Digital Storage Capacity: 32 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited
This review is based on two months of daily use.
I purchased a Kindle without really knowing much about them. I have always been against electronic books because I have always enjoyed the feeling of pages in between my fingers. However, circumstances have made me change my beliefs, mostly not having a nightstand with a light, and books can be bulky for a bike traveler like myself.
So let me just begin with a couple of negatives. A couple of my favorite features about actual books is able to leaf back through pages and re-read portions that I misremembered, or that I really enjoyed. Reading on a Kindle makes that difficult because "leafing through" could take forever, especially if you don't recall the area in which the passage occurs. I'm also a big highlighter and margin note-taker in books so I can analyze. Although you can highlight with Kindles, for me, it's just not the same.
Finally, Kindle's touch screen can be hit or miss - sometimes I will want to go forward, but the page might be back. Load times for the main screen, or cycling through, can be obnoxious. And just looking through Amazon's library to find a book? Forget about it! A lot of the novels on their suggested books, or top sellers, are "adult" novels, or easy reads. It's very difficult to find a book when you just want to discover a new author or title.
Now for the benefits - my favorite feature is integrating Good Reads. It tracks my reading, the books I've read, and the books I want to read. Not only that, but it will give me suggestions based on the books I have saved or I have read. That takes care of the Amazon library problem.
The backlight and the battery life are phenomenal! I can go a week without charging my Kindle, and I read it for about 90 minutes a day. It might be attributed to my backlight always being fairly low. I don't really see a reason to raise it above a third of the meter.
Finally, the Kindle is small enough to fit in the back pocket of jeans. It's lightweight and waterproof. Basically, it's built for travel. As someone who walks and bikes everywhere, it makes reading on a go so much easier than carrying around a bulky or heavy book.
I am grateful for this purchase. Even though it isn't an actual book, I look forward to reading on my Kindle, and if I fall in love with a new book I'm reading on my Kindle, I know that it will be worth the $15 to buy the physical copy and collect dust on my bookshelf!
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Reviewed in the United States on May 17, 2020
★★★★★ 4
Pinhole Bright Spots and Other Issues
Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited, Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited
Updated Review on Oct 6, 2019:
After nearly a year of using it, I noticed that the issues I mentioned in the original review were largely negligible while reading. The pinhole near the corner was never bothersome because I'd have to remember to look very closely to see it. The battery can last for a long time during hibernation, even for many many weeks if not used. I also hardly remember to notice the uneven screen color temperature. The only thing that's still a bit inconvenient is the glare. When near a window I'd have to adjust my reading angle to avoid the glare. It's something hard to overcome with a digital device and it's not a big compromise for light-weight and convenience. Therefore please take my original review below with a grain of salt, I was nitpicking on a device that I had a lot of expectations for. I also decided to change the 3 stars to 4 stars.
Original review on Nov 12, 2018 (with updates on Jan 26, 2019):
I have owned a Kindle Paperwhite since 2014. I really liked that old one and gifted it away a while ago. Perhaps I have had too much expectation for this new 2018 version (waited for many months for the release), I felt quite disappointed with a few of its issues.
First I must be clear that I am a fan of e-books, and I think Kindle Paperwhite has always been a nice device, light, easy to use, easier on the eyes than an LCD screen, easy to look up words, etc. I also used a Kindle Oasis for a couple of days, I don't feel comfortable with the hard slick aluminum back, and its front lights are located on the sides, so the slight uneven light can be observed from left to right; while for Paperwhite with bottom lights, the unevenness is from top to bottom, meaning within each text line, the light is usually even, therefore less distracting to reading.
Here comes the new 2018 Paperwhite:
I like the screen is flat with the bezels now. However, both the first device I received and the subsequent replacement have a bright pinhole dot under the screen (see photos). It's like a piece of tiny defect or dust above the e-ink text and located in the light distribution layer (my guess). When the front light is adjusted to a high level, the dot becomes quite bright and distracting. I was surprised the second device had the same issue (just my luck or something else is going on here?), but because it's near the corner, I decided to live with it. This pinhole bright spot issue apparently can be found on the previous generations as well based on many reviews, I am just astonished Amazon hasn't fixed it.
Also, I don't know what happened with the charging cable, it took me a lot of effort to plug it into the device, and pull it out, it's like as if the connectors are not made well.
(Update Jan 26, 2019: the difficulty of plugging in the cable only occurred during the first couple of uses, it became normal and smooth later.)
Also, the screen feels easier to smudge than my old Paperwhite. The texts appear slightly blurrier where there are fingerprints.
Another issue is that the screen has a ton of reflection from bright windows or light sources (please see my photo, taken under an east-facing window in the afternoon). I don’t remember if it has always been like this or it’s because of the new screen update. Even with the window blinds shut, I had to tilt Kindle to certain angles to avoid the glare, albeit softer than on an LCD screen, still quite distracting. Under the same lighting, a real paperback has no reflection glare issues.
Furthermore, when front light is on and when external ambient light is somewhat dim, my replacement Kindle Paperwhite appears a bit yellower near the bottom, especially on the left side, it’s distracting but hopefully, I’ll get used to it. It’s like real paper books getting old and parts of pages turning yellow—I try to convince myself.
(Update Jan 26, 2019: other reviewers have mentioned issues with poor battery life. My experience is similar that if I don't use it for a few hours, even with WiFi turned on, the device will enter something like a hibernation mode, which requires a bit more time to wake up, but it allows the battery to last for many weeks if left on the shelf. If I read about 1-2 hours a day with wifi on, the battery drains very quickly, and will hardly last beyond a week. However, If you keep airplane mode on during reading, it will significantly conserve battery, the only inconvenience is that if you don't know a word and the dictionary also doesn't have it, which is quite likely the case, Wikipedia won't be able to show up without WiFi.)
Perhaps I’m just asking too much for a digital device. Overall, it’s still a great device to read books, and Amazon still provided a fast replacement when I asked. However, with these experiences, I can no longer swear to e-readers. I don’t write reviews often, but I feel strongly about this product and sincerely hope it will help fellow costumers and help Amazon improve their devices.
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Reviewed in the United States on November 12, 2018
★★★★★ 5
Don't be drama, this is a great kindle.
Digital Storage Capacity: 8 GB, Offer Type: Ad-Supported, Color: Black, Option: Without Kindle Unlimited
My wife attempted to buy the previous generation Kindle, because of some of the negative reviews about this kindle. Thankfully Target didn't have the previous gen so she got me this one instead. I love it, it is light, has a super fast page turn, it's nice knowing that a little splash of coffee won't kill it and it has made me a fan of kindle reading all over again. The backlight is perfect, and turning it all the way down is perfect for reading in the day/sun. I am back to my minimalist ways after getting tired of books piling up around the house. Here are a couple of the negative comments that people have been leaving.
1. "the glare, oh the glare, how can it say anti-glare and then I go out in the sun and I have to squint!"
First of all, that's just drama. Try wearing sunglasses next time you are outside or sit in the shade. I am pretty sure, the last I checked, even paper books can be hard to see without them. First day I had it, sat by the pool all day and read. Not once did I notice a glare.
2. "the slick glass layout of the design makes it prone to chipping, my toddler knocked it off the couch and it chipped the screen a little bit."
hmmm, I have toddlers. You leaving your device in their reach is not the kindle's fault. They are known to destroy everything in their path, and no fortress is strong enough to withstand their furry. This is definitely a "you" problem.
3. Here are some highlights of other comments.
“It’s infuriating that Amazon went to market with this machine. Do not upgrade from prior Paperwhites.”
Amazon producing a new kindle is infuriating? Forget everything I know about human rights issues. Sound the alarm bells.
“To unlock the device, it goes through a long “waking up” period where the backlight is turned up full blast for some reason. It then reverts to your normal backlight setting after unlocking. I blind myself every night reading in bed.”
Please just go to a doctor, any doctor. They should be able to help you with these feelings.
“Bottom line: this is not a finished product, and they shoved it out the door because they wanted to have it out for Christmas.”
Hey you are the one who wanted it for Christmas, so there is that part of it as well.
“Without Wi-Fi, you can't use it.”
Yeah that’s been true for a decade now. But since it’s waterproof, you can use it as a coaster.
I am being sarcastic because people are drama about the funniest things. It’s a great kindle. Buy one, and remember you do need Wifi lol.
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Reviewed in the United States on May 28, 2019
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