SKU: 97020200346

What's Physics All About?

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Description

What's Physics All About?By: Kate Davies Illustrator: Adam Larkum Series: What and Why Discover why things fall to the ground, how sound travels through walls and how many wonderful inventions exist thanks to physics in this lively, informative guide exploring what physics is, how it works and why it is vital to everyday life. Covers all the main topics including forces, electricity, magnetism and astronomy all illustrated with humorous drawings, cartoons and diagrams.

By: Kate Davies | Illustrator:  Adam Larkum | Series: What and Why 

Discover why things fall to the ground, how sound travels through walls and how many wonderful inventions exist thanks to physics in this lively, informative guide exploring what physics is, how it works and why it is vital to everyday life. Covers all the main topics including forces, electricity, magnetism and astronomy - all illustrated with humorous drawings, cartoons and diagrams. Includes simple experiments and internet links to recommended websites to find out more.

Contents of this book include:
Introduction
- What's physics all about?
- Physics all around

The beginning of everything
- How did the Universe begin?
- What's everything made of?

Feel the force
- Speed and motion
- Mass matters
- Friction - there's the rub
- It's the law!
- Work harder!
- Gravity - it makes you more attractive
- Going around in circles
- A balancing act
- Under pressure
- Why does wood float?

Energy everywhere
- Why is energy like a superhero?
- You've got the power
- The heat is on
- What's a wave?
- The electromagnetic spectrum
- Let there be light!
- Hearing things

It's electrifying!
- Where does electricity come from?
- How can electricity flow?
- Going around in circuits
- Why do magnets stick to your fridge?

Lost in space
- Starry, starry night
- What's the Sun?
- What's the Moon?
- Our Solar System

More about physics
- Physics through the ages
- How does physics work?

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SKU: 97020200346

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4.4 ★★★★★
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Verified Purchase
Waleed Shipp
Draper, US
★★★★★ 2
Eufy dropped the ball on this vacuum
Style: L50 SES
I’ll start by saying the reason I purchased this vacuum, is because I have a Eufy 25c robot vacuum that is very dependable. I decided I wanted an upgrade because the 25C was great for cleaning, but I had to empty it way too often. I just knew I would love the L50 SES. I thought it was just what I was looking for a self emptying robot vacuum with a 60 day fill capacity. Allowing 2 months before I needed to touch my vacuum. Here’s where things went wrong. I never got a chance to test the vacuum because it wouldn’t connect to my WiFi and I tried everything. Now this wouldn’t have been a problem if the L50 came with a remote control like the 25C. Unfortunately I had to rely on the App and since the L50 couldn’t connect to my WiFi, I couldn’t control the vacuum. The reason I gave 2 stars is because the customer service at Eufy is awesome. I was given the option to replace the vacuum with a new one but after researching the L50 i decided to return it for a refund. Apparently this model has a defect, because I found so many negative reviews about the same issue with the same model. The thing is I never read reviews because I have a Eufy smart scale, 25C robot vacuum and an Eufy security system and everything works perfectly. So in the end I purchased a Shark Matrix Self emptying robot vacuum and a Shark self emptying stick vacuum. If Shark’s vacuum preforms well, Eufy might have lost a valued customer. I hope this review helps someone make a informed decision. By the way Eufy self emptying vacuum needs replacement bags and the Shark Matrix robot vacuum doesn’t need bags. I will say the suction and design on the Eufy L50 SES was great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2025
I
Verified Purchase
Ilya
Birmingham, US
★★★★★ 5
Much better than the old model.
Style: L50 SES
I had an old s11 that finally died. This one is much better. It maps the house and follows a snake pattern. Once the mapping is finished you can select what rooms you want to clean. I like the self emptying feature. Plenty of battery life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2024
B
Verified Purchase
Bennett
Battle Creek, US
★★★★★ 3
Good performance, flaky Wi-Fi connection
Style: L50 SES
The L50 physically works great - it does a good job of picking up dust and dirt at the end of the day. The pathfinder and route planning algorithm is fairly efficient at determining the best way to clean a room. Sometimes it kicks around bits of dust with its spinning brush without picking it up, but it's not often. What has been terrible, however, is the Wi-Fi support. Since our provider disabled 2.4 GHz support from their router modem without notice, I use a Mac Mini to supply the 2.4 GHz signal, and even though the Eufy is next to it and my phone gets full signal strength, it still can't connect to it half the time. After it fails to connect, it needs to be restarted or even reset to try to get the connection again. Support doesn't seem to be helpful in offering a solution.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
C
Verified Purchase
cecilia pena
Boise, US
★★★★★ 5
Perfect Replacement Roller Mop for Eufy Robot Vacuum
This replacement roller mop fits perfectly and works just like the original. Installation was quick and easy, and the quality feels durable and well-made. It does an excellent job picking up dust and light debris while providing consistent floor cleaning performance. The roller is washable, easy to maintain, and holds up well after multiple cleaning cycles. I appreciate that it restores the robot’s cleaning effectiveness without any compatibility issues. If you own a compatible Eufy model and need a replacement, this is a reliable option that keeps your robot performing at its best. Highly recommended for maintaining optimal cleaning results.
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Reviewed in the United States on May 30, 2026
G
Verified Purchase
Grandma of 5
Pawtucket, US
★★★★★ 5
Fit perfectly
Fit perfectly!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026

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