Vacuum pump
A vacuum pump moves air. It pulls air out of a space. This leaves a space with no air. It can help us do big jobs. We use it in many ways. Do you want to see it work?
Early Reader · Change the reading level on the articleTechnology articles — Page 82
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 82 of 86
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Vagit Alekperov
Vagit Alekperov works with oil. He led a big oil company. He grew up in a place with much oil. His dad worked with oil too. He helps people by giving money. Do you like learning about oil?
Early Reader · Change the reading level on the articleVajont Dam
There was a very tall dam. It held back much water. One day, a big mountain slid down. The land fell into the water. This made a giant wave. The wave hit some towns. Many people were lost. Do you think the mountain…
Early Reader · Change the reading level on the articleValery Chkalov
Valery was a brave pilot. He flew planes in the sky. He even flew over the cold North Pole. He was a very famous man. Many people remember him today. Do you like planes?
Early Reader · Change the reading level on the articleValve Corporation
Valve makes fun games. They also make tools to play them. You can use Steam to find games. Some games are very famous. It is a big company. Do you like to play games?
Early Reader · Change the reading level on the articleVanguard-class submarine
These are big boats in the sea. They stay under the water. They carry very strong tools. These tools help keep the land safe. They are very large. Can you imagine a boat under the sea?
Early Reader · Change the reading level on the articleVanity Fair (magazine)
Vanity Fair is a magazine. It shows clothes and news. It has many stories. It helps us see famous people. It is fun to read. Do you like magazines?
Early Reader · Change the reading level on the articleVannevar Bush
Vannevar Bush was a smart man. He built many new things. He made a machine to help with math. He also helped many scientists work together. His work helped our world. Do you like to build things?
Early Reader · Change the reading level on the articleVapor–liquid separator
Some things are a mix of air and liquid. A machine helps them split apart. The heavy liquid falls to the bottom. The light air goes to the top. This helps machines work well. It is very useful! Can you see the air move?
Early Reader · Change the reading level on the articleVariable capacitor
Some parts help us find a radio station. They use metal plates to work. You can turn a knob to move them. This helps the radio find the right sound. It makes music easy to hear. Do you like to listen to the radio?
Early Reader · Change the reading level on the articleVariable-frequency oscillator
A radio tool helps us hear. It can change its sound. We use it to find a station. It helps us hear music or talk. It is very helpful. Do you like to listen to the radio?
Early Reader · Change the reading level on the articleVariable (high-level programming language)
A variable is like a box. It holds a thing inside. You can give the box a name. You can change what is in the box. This helps a computer work. Do you like to use boxes?
Early Reader · Change the reading level on the articleVariable renewable energy
The sun and wind make power. They do not work all the time. Sometimes there is no wind. Sometimes it is dark at night. We can use big batteries to save it. This helps us have light. Do you like the sun?
Early Reader · Change the reading level on the articleVariety (magazine)
Variety is a news book. It tells news about movies. It tells news about music too. It helps people who work in shows. Do you like movies?
Early Reader · Change the reading level on the articleVarnish
Varnish is a clear coat for wood. It makes wood look shiny. It also keeps the wood safe. It can be a little bit yellow. It helps your furniture stay nice. Do you see shiny wood at your house?
Early Reader · Change the reading level on the articleVasco da Gama Bridge
A big bridge crosses a river. It helps many cars travel. It is very long. This helps people get around. It is a great sight! Do you like big bridges?
Early Reader · Change the reading level on the articleVector graphics
Computers use math to draw shapes. They use dots and lines. This makes lines look very sharp. You can make the shapes big. They will still look good. Do you like to draw with computers?
Early Reader · Change the reading level on the articleVehicle armour
Some cars have strong shells. These shells keep people safe. They can stop hard hits. This helps people in big fights. It also helps cars carry money. Do you want to see a tank?
Early Reader · Change the reading level on the articleVehicle for hire
You can pay to ride in a car. A driver takes you where you want to go. You do not have to drive. Some cars even use a phone to find you. It is a fun way to travel. Do you like riding in cars?
Early Reader · Change the reading level on the articleVending machine
A machine can give you a snack. You put in money first. Then the machine gives you a treat. It can sell chips or drinks. It helps when you are hungry. Do you like snacks from a machine?
Early Reader · Change the reading level on the articleV engine
Some car engines look like the letter V. They have two rows of parts. These parts work together to make power. This helps cars move fast. It makes the engine short and wide. Do you like fast cars?
Early Reader · Change the reading level on the articleVerghese Kurien
A man named Verghese Kurien helped many people. He helped farmers sell milk. This gave them more money. Now, India makes a lot of milk. It is a very big job. He was a great leader. Do you like milk?
Early Reader · Change the reading level on the articleVerizon
Verizon is a big company. It helps people talk. It helps people use the internet. Many people use it on phones. It is very large. Do you use a phone to talk to friends?
Early Reader · Change the reading level on the articleVernier scale
This tool helps us measure things. It can see tiny lines. It helps us be very exact. This is good for science. It makes measuring fun. Do you like to measure things?
Early Reader · Change the reading level on the articleVerrazzano–Narrows Bridge
A big bridge crosses the water. It links two parts of New York. Cars drive on it every day. It helps people get around the city. It is very, very long. Do you like big bridges?
Early Reader · Change the reading level on the articleVersion control
Computers can save many versions of a file. This helps people work together. You can see old work too. It helps fix mistakes fast. It is like a time machine for files. Can you find an old file?
Early Reader · Change the reading level on the articleVery-large-scale integration
Tiny chips do big jobs. They hold many small parts. These parts work together. They make your computer fast. We use them every day. Can you find a chip? It is inside your toys!
Early Reader · Change the reading level on the articleVery Long Baseline Array
Ten big dishes look at space. They work as one big team. They help us see far away. They are as tall as buildings. This helps us learn about stars. Do you like looking at the sky?
Early Reader · Change the reading level on the articleVery long instruction word
Computers use many tiny parts to work. Some parts do many jobs at once. This makes the computer very fast. It helps you play games. It can help you learn too. Do you like fast computers?
Early Reader · Change the reading level on the articleVGA connector
This is a plug for video. It helps a computer talk to a screen. It uses many small pins to work. This helps you see pictures. It is very useful. Do you see any plugs like this?
Early Reader · Change the reading level on the articleVHS
VHS is a way to watch movies at home. It uses a long tape in a box. You can rent movies on these tapes. This helps you see films in your living room. It was very popular a long time ago. Do you like watching movies?
Early Reader · Change the reading level on the articleViaduct
A viaduct is a long bridge. It can go over a valley. It can go over a river. It helps cars and trains move. It can even have shops underneath. Can you see a bridge near you?
Early Reader · Change the reading level on the articleVial
A vial is a tiny bottle. It can be made of glass. It can be made of plastic. It holds small amounts of liquid. These help doctors give medicine. It is a helpful tool. Do you see small bottles at home?
Early Reader · Change the reading level on the articleVideocassette recorder
A VCR is a machine for movies. It uses a black tape. You can watch shows later. This helps you see your favorite films. It was very popular a long time ago. Do you like watching movies?
Early Reader · Change the reading level on the articleVideo coding format
Videos use a special way to save space. This helps the video play on your screen. It makes the files small. This is how we watch shows online. It is very cool! Do you like to watch videos?
Early Reader · Change the reading level on the articleVideo game crash of 1983
Long ago, video games had a hard time. Many people stopped buying them. There were too many bad games. People also wanted to buy computers instead. This made many game companies lose money. Do you like playing video…
Early Reader · Change the reading level on the articleVideo game development
People make video games. They draw the art. They write the stories. Some games take a long time to make. You can play them on a screen. Do you like to play games?
Early Reader · Change the reading level on the articleVideo game graphics
Games use many looks. Some games use just words. Other games use lines and shapes. Some look like real movies. New games look very real. They are fun to play. Do you like games?
Early Reader · Change the reading level on the articleVideo game industry
Many people make video games. They work on computers. They make the art and the sounds. This helps us have fun. It is a big job for many people. Do you like to play games?
Early Reader · Change the reading level on the articleVideotape
Videotape holds moving pictures. It can also hold sound. The tape sits in a small case. We use it to watch shows. It helps us see things again. Do you like to watch videos?
Early Reader · Change the reading level on the articleVideotelephony
You can see and hear people far away. It is like magic. You can talk on a screen. It helps us stay close. We can see our friends. Do you like to video call?
Early Reader · Change the reading level on the articleVienna U-Bahn
Trains run under the ground. They go to many places. They help people move fast. You can ride them too. It is a fun way to travel. Do you like trains?
Early Reader · Change the reading level on the articleVim (text editor)
Vim is a tool for writing. It helps people write code. It works on many computers. You can use it to make things. It is very good for work. Do you like to write on a computer?
Early Reader · Change the reading level on the articleVint Cerf
Vint Cerf helped build the internet. It helps us talk to people. He worked with other smart people. Now we can use computers every day. He is a very kind man. Do you use the internet?
Early Reader · Change the reading level on the articleViral video
A viral video is very popular. People share it with friends. They send it in emails. They post it on websites. It spreads fast like a cold. Have you seen a funny video?
Early Reader · Change the reading level on the articleVirgin Group
Virgin is a big group. It helps many businesses. It has planes and trains. It even has music. It helps people start new jobs. Do you like to travel?
Early Reader · Change the reading level on the articleVirtualBox
This is a special tool for computers. It lets one computer act like many. You can run new programs inside it. It helps you try new things safely. It is very fun to use. Do you like computers?
Early Reader · Change the reading level on the articleVirtual camera system
Games use a fake camera. It shows you the world. It can stay still. It can follow you. You can even move it yourself. It helps you see the fun! Do you like to play games?
Early Reader · Change the reading level on the article