Cam follower
This part helps machines move. It rolls along a track. It can be a small rod or a ring. It helps things work well. It is very useful. Do you like machines?
Early Reader · Change the reading level on the articleTechnology articles — Page 25
Explore inventions, engineering, computing and the tools people build to solve problems. Choose an article below; its reading controls let you move between the available levels.
4,107 public articles · Page 25 of 86
Camshaft
A camshaft is a long metal rod. It has bumps on it. The bumps push parts to open and close. This helps a car engine work. It is very important. Do you like cars?
Early Reader · Change the reading level on the articleCanada Science and Technology Museum
This museum is in Canada. It has many cool things. You can see old tools and machines. It helps us learn how things work. It is a fun place to visit. Do you like to learn?
Early Reader · Change the reading level on the articleCanadian Broadcasting Corporation
The CBC brings news to Canada. It uses radio and TV. It has shows in English and French. It helps people stay connected. It is very old. Do you watch the news?
Early Reader · Change the reading level on the articleCanal du Midi
This is a long path for boats. It is in France. It helps boats move. It links two big seas. People still use it today. It is very old. Do you like boats?
Early Reader · Change the reading level on the articleCanard (aeronautics)
Some planes have a small wing in front. This small wing helps the plane move. It can help the plane turn fast. This helps pilots fly well. Do you like planes? Can you see the small wing?
Early Reader · Change the reading level on the articleCantilever bridge
A cantilever bridge reaches out. It stays up on one end. It can cross big gaps. This helps us get across water. It is very strong. Can you see a bridge near you?
Early Reader · Change the reading level on the articleCapacity factor
Some machines make power. They work all the time. But sometimes they stop. They might need to rest. Or the sun might go away. This helps us see how much work they do. Do you like the sun?
Early Reader · Change the reading level on the articleCapstan (nautical)
A capstan helps pull big things. It is a tall tool on ships. Sailors turn it to pull ropes. It makes pulling much easier. It helps move heavy things. Can you imagine pulling a big rope?
Early Reader · Change the reading level on the articleCaracas Metro
Trains run under the city. They help people move fast. There are many stops. These stops are called stations. The trains help us get around. Do you like to ride trains?
Early Reader · Change the reading level on the articleCaravel
The caravel was a small ship. It used sails to move on water. These ships were very fast. They could go in shallow water. Explorers used them to find new places. It helped people travel far. Can you imagine sailing…
Early Reader · Change the reading level on the articleCarbon (API)
Carbon helped old computer programs work. It helped them run on new computers. This made it easy for people to keep using their apps. Now, new tools do this job instead. It was a big help for a long time. Do you use…
Early Reader · Change the reading level on the articleCarbon-dioxide laser
A special light can cut things. This light comes from a gas. It is very strong. It can help doctors fix skin. It can even help make parts in a factory. Do you want to see more?
Early Reader · Change the reading level on the articleCarbon-fiber reinforced polymer
This is a very strong material. It is made of tiny black threads. It is also very light. We use it to make fast planes. It helps make sports gear too. It is a great thing. Can you find it in your house?
Early Reader · Change the reading level on the articleCarbon fibers
These are very thin threads. They are made of carbon. These threads are very strong. They are also very light. We use them for fast cars and planes. They help things stay light. Do you see them on a bike?
Early Reader · Change the reading level on the articleCardboard box
Boxes are made of thick paper. They hold many things. They can hold food or toys. You can even play in them! They are fun to use. Do you like big boxes?
Early Reader · Change the reading level on the articleCarding
We use tools to fix wool. These tools clean the wool. They make the bits straight. This helps us make yarn. It is a fun job. Do you like to make things?
Early Reader · Change the reading level on the articleCargill
Cargill is a very big food company. It helps move food around the world. They work with grain and meat. This helps feed many people. Some people worry about how they work. Do you like to eat food from big farms?
Early Reader · Change the reading level on the articleCargo aircraft
Cargo planes carry big things. They fly food and toys. Some planes have large doors. This helps move heavy stuff. They help us get things fast. Do you like getting mail by plane?
Early Reader · Change the reading level on the articleCarl Icahn
Carl Icahn is a businessman. He buys parts of big companies. He helps them change to make more money. He has a lot of money. He works in Florida now. Do you like business?
Early Reader · Change the reading level on the articleCarl Wilhelm Siemens
William was a smart man. He made new things. He built a special oven. It made very hot heat. This helped make strong steel. He also worked with wires. He helped people talk far away. Do you like to build things?
Early Reader · Change the reading level on the articleCarl Zeiss
Carl Zeiss made tools to see things. He made tools that help us see small things. He made many great microscopes. These tools help us learn about our world. He was a very smart maker. Do you like to look through a lens?
Early Reader · Change the reading level on the articleCarmen Aristegui
Carmen is a news worker. She tells the truth. She works in Mexico. She helps us learn what is happening. She is very brave. Do you like to hear the news?
Early Reader · Change the reading level on the articleCaroline Rose Hunt
Caroline Hunt ran many hotels. She built a big business. She helped many people too. She gave money to schools. This helped her town. Do you like to travel? She was a very busy lady.
Early Reader · Change the reading level on the articleCarpool
You can share a car ride. More people sit in one car. This helps save money on gas. It also helps the air stay clean. Sharing is a great way to travel. Do you like to share?
Early Reader · Change the reading level on the articleCarrefour
Carrefour is a big shop. It sells food and things for homes. These shops are in many countries. They help people buy what they need. It is a very large group. Do you like to shop?
Early Reader · Change the reading level on the articleCar suspension
Cars have a special part. It helps the wheels move. It keeps the ride smooth. It stops things from breaking. It helps you stay safe. Do you like smooth rides?
Early Reader · Change the reading level on the articleCartridge (firearms)
A cartridge is one small package. It holds everything needed to shoot. It has a metal case. Inside is powder and a small part to start the fire. This helps people use tools safely. Can you see the different shapes?
Early Reader · Change the reading level on the articleCar wash
A car wash cleans cars. It washes off dirt. People can wash cars by hand. Some machines do the work for you. It makes cars look new. Do you like clean cars?
Early Reader · Change the reading level on the articleCash flow statement
A paper shows money flow. It shows money coming in. It shows money going out. This helps a shop pay bills. It helps us see if a shop is healthy. Do you like to save money?
Early Reader · Change the reading level on the articleCassette tape
A cassette tape holds music. It is a small plastic box. Inside, there is thin tape. You can play music from it. You can even record your own songs. It helps us take music anywhere. Have you ever heard a tape play?
Early Reader · Change the reading level on the articleCasting
We can make things by pouring. First, we melt metal until it is liquid. Then we pour it into a shape. It cools and becomes hard. This helps us make big tools. It can even make art! Have you seen things made this way?
Early Reader · Change the reading level on the articleCatalytic converter
Cars have a special part. It helps clean the air. It turns bad smoke into safe air. This helps keep our world clean. We can breathe better because of it. Do you like fresh air?
Early Reader · Change the reading level on the articleCatamaran
A catamaran is a special boat. It has two parts that float. These parts stay side by side. This helps the boat stay steady. It does not tip over easily. It can be very fast! Do you want to sail one?
Early Reader · Change the reading level on the articleCaterpillar Inc.
Big machines help build things. They move dirt and rocks. These machines are bright yellow. They are called CAT. They help us make roads. Do you like big trucks?
Early Reader · Change the reading level on the articleCBS
CBS is a big TV group. It shows shows on your screen. They show news and sports. They also show fun games. People watch it at home. Do you like to watch TV?
Early Reader · Change the reading level on the articleCD player
A CD player plays music. It uses a small disc. The disc has songs on it. You can hear music from it. It can be small or big. Do you like to listen to music?
Early Reader · Change the reading level on the articleCeiling fan
A fan hangs on the ceiling. It has blades that spin. The spinning blades move the air. This makes a cool breeze for you. It helps you feel good on a hot day. Do you like the breeze?
Early Reader · Change the reading level on the articleCelebrity branding
Famous people help sell things. They show us what to buy. We see them in ads. This helps us trust the brand. It makes the brand look good. Do you like famous people?
Early Reader · Change the reading level on the articleCellular network
Phones talk through the air. Tall towers send signals. These towers act like little stations. They help your phone work. This lets us talk to friends. It is like magic! Can you find a tower?
Early Reader · Change the reading level on the articleCeramic engineering
People make things from special clay. These things can stay very hot. They can also stay very sharp. They help us in many ways. Do you like to use them?
Early Reader · Change the reading level on the articleCésar Ritz
César Ritz was a man who ran hotels. He made them very fancy. He wanted guests to be happy. He even said the customer is always right. His name is used to mean something very grand. Do you like to stay in hotels?
Early Reader · Change the reading level on the articleCessna 172
This is a small plane. It can carry four people. Many people fly this plane. It helps pilots learn to fly. It is a very good plane. Do you like to fly?
Early Reader · Change the reading level on the articleChad Hurley
Chad Hurley helped make YouTube. He helped people share videos. He worked with friends to build it. This helps us watch things online. He is a busy man. Do you like to watch videos?
Early Reader · Change the reading level on the articleChaleo Yoovidhya
Chaleo was a man from Thailand. He made a special drink. It helps people feel awake. It has two red bulls on it. This drink is very famous. Do you like energy drinks?
Early Reader · Change the reading level on the articleChalk line
A chalk line makes long lines. It uses a string with dust on it. You pull the string tight. Then you snap it. This leaves a straight line. It helps builders work. Can you draw a straight line?
Early Reader · Change the reading level on the articleChambly Canal
This is a long path for boats. It runs by a big river. It helps boats move from place to place. It is very old. It is a fun place to see today. Do you like boats?
Early Reader · Change the reading level on the articleChanda Kochhar
Chanda Kochhar was a bank leader. She worked at a big bank in India. She helped many people with money. Now, she is in trouble for how she worked. It is important to follow the rules. Do you know what a bank does?
Early Reader · Change the reading level on the article