Evan Spiegel
Evan Spiegel makes apps. He helped start Snapchat. Many people use it. He also helps kids learn. He gives money to schools. He is a busy man. Do you use apps?
Early Reader · Change the reading level on the articleTechnology articles — Page 36
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 36 of 86
Evaporative cooler
Water can help cool the air. It works like your sweat. When water turns into air, it takes heat away. This makes the air feel cool. It is great for dry places. Can you feel a cool breeze?
Early Reader · Change the reading level on the articleE. W. Scripps (businessman)
A man named E. W. Scripps made news. He started many newspapers. He also helped people learn about science. He gave money to help science work. He liked to share new things. Do you like to read the news?
Early Reader · Change the reading level on the articleExcavator
An excavator is a big machine. It can dig deep holes. It uses a large bucket to scoop dirt. This helps us build new things. It is very strong! Have you seen one work?
Early Reader · Change the reading level on the articleException handling
Computers follow many rules. Sometimes a rule is broken. The computer must stop and fix it. This helps the computer keep working. It can even finish its job. Do you like to follow rules?
Early Reader · Change the reading level on the articleExecutable
A computer uses special files. These files tell it what to do. They act like a set of rules. The files help the computer work. It is fun to see them run. Do you like to use computers?
Early Reader · Change the reading level on the articleExecution (computing)
A computer follows rules to work. It reads a list of steps. Then it does each step. This makes the computer run. It helps you play games. Do you like using computers?
Early Reader · Change the reading level on the articleExistential risk from artificial intelligence
Some people worry about smart machines. These machines might get too smart. They might not listen to us. This could be a big problem for people. We must learn to keep them safe. Do you think machines can be smart?
Early Reader · Change the reading level on the articleExpansion card
A computer card adds new jobs. You plug it into a slot. It can help a computer play games. It can help it talk to tools. It makes your computer better. Do you have a computer?
Early Reader · Change the reading level on the articleExplosively formed penetrator
A loud blast can shape metal. It turns a metal plate into a rod. This rod flies fast. It can hit things far away. It is very strong. Can you imagine a metal rod flying like that?
Early Reader · Change the reading level on the articleExposure (photography)
Cameras need light to take pictures. Light hits the camera. This makes the picture. If there is too much light, the picture is too white. If there is too little, it is too dark. Do you like taking photos?
Early Reader · Change the reading level on the articleExpressCard
An ExpressCard is a small tool. It plugs into a laptop. It helps the computer do more. You can add sound or internet. It makes your computer better. Do you use a laptop?
Early Reader · Change the reading level on the articleext4
Computers use this to save files. It keeps your work safe. It works very fast. It helps your computer stay organized. It is very good at its job. Do you like using computers?
Early Reader · Change the reading level on the articleExtractive metallurgy
People get metal from rocks. We find it in the ground. It is hard to get out. We use heat or water. This helps us make things. Can you find metal at home?
Early Reader · Change the reading level on the articleExxonMobil
ExxonMobil is a very big company. It finds oil deep in the ground. It also makes things like plastic. Some people say they hurt the Earth. This is a big job. Do you know where oil comes from?
Early Reader · Change the reading level on the articleFacial recognition system
Computers can see faces. They look at your eyes and nose. This helps them know who you are. It can help at an airport. It is very cool! Do you have a phone that does this?
Early Reader · Change the reading level on the articleFacial tissue
Tissues are soft paper. They help you clean your face. You can use them to blow your nose. They are very light and thin. They come in a box. They help us stay clean. Do you have a box near you?
Early Reader · Change the reading level on the articleFADEC
A computer helps fly planes. It runs the big engines. It makes sure the engines work well. This helps the plane stay safe. It is very smart. Do you like planes?
Early Reader · Change the reading level on the articleFairchild Republic A-10 Thunderbolt II
This is a big plane. It is called a Warthog. It helps people on the ground. The plane is very strong. It can fly even if it gets hurt. Do you like big planes?
Early Reader · Change the reading level on the articleFakt
Fakt is a big newspaper. It is made in Poland. Many people read it every day. It tells many stories. Some people do not like how it works. Do you like to read news?
Early Reader · Change the reading level on the articleFan (machine)
A fan moves the air. It has blades that spin. These blades can be made of wood or plastic. It helps us feel cool. It can even help computers stay cool. Do you like a cool breeze?
Early Reader · Change the reading level on the articleFast fashion
Some stores make clothes very fast. These clothes cost very little money. They use new styles to sell more. This can make a lot of trash. It can also hurt our Earth. Do you like new clothes?
Early Reader · Change the reading level on the articleFax
A fax machine sends pictures. It scans a paper. Then it sends the image over a phone line. The other machine prints it out. It helps people share news. Do you like sending pictures?
Early Reader · Change the reading level on the articleFazlur Rahman Khan
Fazlur Khan built tall buildings. He made buildings like tubes. He used ideas from bamboo. These buildings reach the sky. They help many people have space. Do you like tall buildings?
Early Reader · Change the reading level on the articleFeasibility study
People check a plan first. They look at a new idea. They see if it will work. They check if it costs too much. This helps a plan stay strong. Can you think of a big plan?
Early Reader · Change the reading level on the articleFedEx
FedEx moves things from place to place. They use big planes and fast vans. They can send boxes to many lands. This helps people get what they need. It is a very big job! Do you like getting mail?
Early Reader · Change the reading level on the articleFedor Tokarev
Fedor Tokarev was an inventor. He made tools for the army. He made guns and cameras. His work helped many people. He won big prizes for his ideas. Can you think of something to invent?
Early Reader · Change the reading level on the articleFeedback
Things can act in a loop. One thing happens. Then that thing tells the next thing what to do. This can keep things the same. It can also make things go faster. It is like a circle. Do you see loops in your world?
Early Reader · Change the reading level on the articleFeeler gauge
This tool helps us measure small spaces. It is made of thin metal strips. Each strip has a different size. You can slide them into a tiny gap. This helps things fit just right. Do you like to build things?
Early Reader · Change the reading level on the articleFei-Fei Li
Fei-Fei Li helps computers see. She teaches them to know what things are. She made a big list of many pictures. This helps computers learn fast. Her work helps us every day. Do you like computers?
Early Reader · Change the reading level on the articleFelix Wankel
Felix Wankel made a new engine. It helps cars go. He loved to work with machines. This engine is very special. It is used in many cars. Do you like fast cars?
Early Reader · Change the reading level on the articleFerdinand Piëch
A man named Ferdinand helped make cars. He worked for many big car groups. He helped make fast and fancy cars. These cars are known all over the world. He was a very smart builder. Do you like fast cars?
Early Reader · Change the reading level on the articleFerdinand Porsche
Ferdinand Porsche made cars. He liked how things work. He built a special car with two types of power. He also helped make a small car for many people. He did some work for a war too. Do you like fast cars?
Early Reader · Change the reading level on the articleFerdinand von Zeppelin
A man named Ferdinand made big ships for the sky. These ships could fly in the air. He used a strong frame to hold them up. They helped people travel far away. He worked very hard on his ideas. Do you like to fly?
Early Reader · Change the reading level on the articleFerrari
Ferrari makes fast cars. These cars are in Italy. They are very special. Many people love them. They like to race. Do you like fast cars?
Early Reader · Change the reading level on the articleFerris wheel
A Ferris wheel is a big wheel. It turns in a circle. You sit in a small car. The cars stay upright as you ride. It is a fun ride. Have you seen one?
Early Reader · Change the reading level on the articleFerrovie dello Stato Italiane
Trains run in Italy. This group runs them. They fix the tracks. They help people travel. They even use boats for trains. It is very helpful. Do you like trains?
Early Reader · Change the reading level on the articleFerruccio Lamborghini
Ferruccio Lamborghini loved machines. He made big tractors for farms. He also made fast cars. He wanted to make the best cars in the world. Do you like fast cars?
Early Reader · Change the reading level on the articleFiat
Fiat makes cars. They are from a place called Italy. They have made cars for a long time. Many people drive them today. It is a very big company. Do you like cars?
Early Reader · Change the reading level on the articleFiberglass
Fiberglass is a strong material. It uses tiny bits of glass. These bits are mixed with plastic. It can make boats and surfboards. This helps us build things that last. Do you see anything made of this?
Early Reader · Change the reading level on the articleField-effect transistor
A tiny part helps tools work. It lets power flow through a path. It uses a gate to control it. This helps your phone and computer run. It is a very big help! Do you like using computers?
Early Reader · Change the reading level on the articleField gun
A field gun is a big tool. It can move fast. It can move to new spots. This helps soldiers in a fight. It is very strong. Do you think it is loud?
Early Reader · Change the reading level on the articleFieldnotes
Scientists write notes to learn. They write what they see. They draw pictures too. This helps them not forget. It helps us learn about nature. Do you like to draw what you see?
Early Reader · Change the reading level on the articleField-programmable gate array
Some computer parts can change. They can do many jobs. You can teach them new things. This helps us build new tools. It is very cool! Can you imagine a computer that changes?
Early Reader · Change the reading level on the articleFighter-bomber
Some planes can do two jobs. They are fast fighters. They can also carry bombs. This helps them attack from the sky. It is a very busy plane. Do you like planes?
Early Reader · Change the reading level on the articleFigure-eight knot
This is a special knot. It looks like the number eight. It stops ropes from slipping away. People use it to climb rocks. It is easy to untie. It helps keep us safe. Can you see the shape?
Early Reader · Change the reading level on the articleFile Allocation Table
Computers use a list to find files. This list tells the computer where to look. It helps the computer find your work. It works on small tools like USB sticks. This helps many machines talk to each other. Do you use a…
Early Reader · Change the reading level on the articleFile format
Computers use files to save things. A file tells the computer what it is. It can be a song or a picture. This helps the computer work fast. It is like a label on a box. Do you like to look at pictures on a screen?
Early Reader · Change the reading level on the article