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Description
Поля і звуки. Цікава фізика. Fields And Sounds. Interesting Physics. . Fields And Sounds. Interesting Physics ' . ' : '', ' ', ' ', ', , ', ' ', ' '. , , . , , , . : , , , . , , . . 8 12 . , , , , . , . , , ; . , . , . SPECIFICATIONS: Author: Author not specified Publisher: Language: Ukrainian Publication Date: 2014 Number of pages: 32 pst Format: Paperback Width: 215 mm 8,5' Height: 295 mm 11,6' Weight: 100 g Illustrations: Colored ISBN: 9786176861478
Поля і звуки. Цікава фізика. Fields And Sounds. Interesting Physics
Серія дитячих енциклопедій 'Моя книжкова полиця. Цікава фізика' включає кілька книг: 'Електрика', 'Світло і колір', 'Поля і звуки', 'Робота, сила, енергія', 'Закони руху', 'Новітні відкриття'. Інформація подається в доступній цікавій формі, забезпечена яскравими, цікавими ілюстраціями.
Метою видання є не стільки доскональне вивчення фізики, скільки ознайомлення з найцікавішими і важливими фактами і явищами, що дозволяє захопити дитину, спонукати її до подальшого навчання. Відмінна риса серії – наявність рубрик: “На машині часу”, “Дивовижні факти”, “Чомучка”, “Перевір себе” тощо. Кожна рубрика по-своєму доповнює захоплюючу розповідь, у доступній формі роз’яснюючи складні терміни, ілюструючи прикладами поданий матеріал. Крім теоретичних даних у кожній книзі представлені різнопланові практичні завдання.Серія дитячих енциклопедій “Моя книжкова полиця” призначена для дітей 8-12 років. Енциклопедії доповнять знання учнів, отримані на уроках фізики,а цікаві факти, які систематизовані з теми “Фізика”, учні зможуть використовувати під час написання рефератів. Незвичайна форма подання матеріалу, а також велика кількість кольорових ілюстрацій роблять серію цих книжок справжньою знахідкою для шкільних бібліотек.З цієї книги діти дізнаються що потрібно, щоб поширювалась звукова хвиля, який для цього потрібен носій; що таке дифракція і як залежить швидкість звуку від температури повітря. Зможуть за допомогою розділу “Домашня лабораторія” провести досліди з бокалами і “співучою лінійкою”, щоб вивчити силу звука та його висоту.Незвичайна форма подання матеріалу, а також велика кількість кольорових ілюстрацій зроблять серію цих книжок справжньою знахідкою для шкільних бібліотек.SPECIFICATIONS:
Author: - Author not specified
Publisher:Весна
Language:Ukrainian/Українська
Publication Date:2014
Number of pages:32 pst
Format:Paperback
Width:215 mm / 8,5'
Height:295 mm / 11,6'
Weight:100 g
Illustrations:Colored
ISBN:9786176861478
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4.5 ★★★★★
Based on 2462 reviews
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Product Reviews
★★★★★ 5
The perfect coffee mug warmer!
Color: Wood
If you need a coffee cup warmer for your desk or work-station, this is it! I've been using almost daily for several weeks now and zero complaints thus far.
As with many-a-reviewer, the problem I was trying to solve is my coffee going cold long before I was done with it, leading to repeated microwave rewarm sessions. After reading through numerous reviews, articles on the matter, and forum postings, I settled on this product. My requirements:
- I did not want to use a specialized cup
- I did not want to have to find "flat-bottom" cups, I wanted to use any cup in my cupboard
- I wanted the coffee to stay hot, not just warm
- I needed auto-off, since I surely would forget to turn it off
- Idiot-proof controls
This product's description seemed to check all the boxes, and it delivered! I've been using for several weeks and it's been perfect. It works with my regular ceramic coffee mugs, and on high setting, keeps my coffee pretty hot (130F). All my ceramic mugs are concave bottom - look at picture in my review - so that's why it only gets that hot on High. A flat-bottom cup may only need Medium setting since it would have more contact area for heat transfer.
The faux-wood trim makes it look sorta classy, and although it is large, it doesn't look absurd on my desk, and I'd rather it be bigger than my cup, rather than too small. And I imagine I could use it to keep soup or other food warm on my desk, since I also take forever to finish food when I do eat at my desk. The faux-wood trim does not get hot-to-touch, so it also prevents burns from accidental touch. The surface is, of course, very hot but no little kids or cats in our house, so that wasn't a concern for me.
I'm glad I went with this 36W option, even though some articles I read indicated this was overkill. As mentioned above, I imagine I need the higher wattage heating element because I use regular concave-bottom coffee mugs. I have it plugged into surge protector that powers my tower PC and 4 UHD 27" monitors, and I haven't tripped anything yet. 36W is even less than what a fast-charging laptop charger would pull, so this doesn't seem excessive for a workstation.
FOOD SAFETY WARNING: As a former research lab assistant that grew bacterial cultures as one of my duties, I'd like to remind people to keep in mind that the danger zone for bacterial growth is ~40F to 140F, especially with dairy creamers. To test temperatures, I used a ceramic concave-bottom mug (starbucks mug in picture) and a metallic flat-bottom mug (green mug in picture). Here are the liquid temperatures I measured for this warmer:
- Ceramic convex-bottom mug, Warmer on High: 130F
- Metallic flat-bottom mug, Warmer on High: 175F
- Metallic flat-bottom mug, Warmer on Med: 150F
As you can see, the concave-bottom makes a significant difference in heat transfer, and thus the temperature of the liquid. Use common sense on how long you leave your coffee on the warmer. Coffee at 130F is probably fine for a couple hours, but if you're gonna be leaving it all day, you'll want it to be at 140F+, so use a flat-bottom cup. The metallic one I have got real hot to the touch, including handle and lip of cup, even at Medium, so you'll probably want to use a ceramic one.
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Reviewed in the United States on April 7, 2024
★★★★★ 5
My favorite desk item
Color: Wood
I love my coffee but it must be hot-every sip! I'd get up at work so often to go reheat my coffee in the nuker & don'tlike the microwave AND a hater coworker even commented to me that she noticed "how much I get up from my desk" so I thought, they gotta be making coffee hot plates for desktops these days & boom, they do!! I like the wood finish, right my aesthetic alley. The plate has 3 settings; high, medium & low. Even has an auto shutoff after..idk how many hours so built in safety. I've even put my ceramic cup of soup on there to keep it warm while I work through lunch a couple times & it worked for my soup on the high setting. Coffee goes to medium when I first get in since it cools on the car ride over & then down to low once it's hot again. Will be getting one for the home office here soon.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Mug warmer
Color: Wood
This is a well made mug warmer, heats up quickly and convenient to use. The heat ratio is high making it easy to select the level of heat one wants to have to enjoy their coffee, tea, hot chocolate, etc. The only default I have with this product is how to turn on the warmer. It's convenient but if something is sitting next to the warmer, the warmer turns on too easily. I would recommend the manufacturer use some type of switch to turn on, adjust and turn off the warmer due to the chances of heating something up that was not intentional!
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Simple and very useful
Color: White
Right out of the box it works just as expected, gets perfectly hot. Even with a small cup, my coffee typically cooks to quickly for my taste. Jumping up to give it a pop in the microwave gets old fast. Problem solved. For already hot coffee, the low is enough to keep it sippable. I'm pretty sure I could hear a can of soup from room temp on the high setting. I do hope it is doable because this is a perfect hot plate.
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Reviewed in the United States on April 22, 2026
★★★★★ 4
Works great but design flaw.
Color: Wood
Works great. 3 settings. The first is HOT. I usually use the middle or low setting and they keep my cup warm and drinkable. There is a flaw though with this device. The warming button is so easy to touch /come on that several times on my desk, it has come on without me realizing it from paper hitting it, a pen rolled against it or simply moving it over and it is on highest setting when it comes on so I have burned my fingers now twice. I just always double and triple check it isn’t on.
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Reviewed in the United States on February 14, 2026