Henri Moissan
Henri was a smart man. He loved to study how things work. He found a new gas. He also found a new stone. He won a big prize for his work. Can you find a stone like that?
Early Reader · Change the reading level on the articlePhysical Science articles — Page 32
Explore matter, energy, chemistry and the physical laws that help explain everyday life. Choose an article below; its reading controls let you move between the available levels.
2,727 public articles · Page 32 of 57
Henry Taube
Henry Taube was a great scientist. He studied how things change. He won a very big prize. This prize shows he did great work. He loved to learn new things. Do you like to learn too?
Early Reader · Change the reading level on the articleHenry Way Kendall
Henry was a smart man. He studied how small things work. He won a big prize for his work. He also loved to climb tall rocks. He was a great diver too. Do you like to explore?
Early Reader · Change the reading level on the articleHerbert Kroemer
Herbert Kroemer was a smart man. He studied how tiny parts work. He helped make tools for phones. This helps us talk to friends. His work was very big. Did you know he won a great prize?
Early Reader · Change the reading level on the articleHermann Staudinger
A man named Hermann studied tiny things. He found that some things are like long chains. These chains are made of small parts linked together. This helps us make things like plastic. His work was very big. Do you…
Early Reader · Change the reading level on the articleHess's law
Heat changes stay the same. You can take one big step. Or you can take small steps. The total heat is still the same. This helps us learn about heat. It is like a path. Does that make sense?
Early Reader · Change the reading level on the articleHexagonal crystal family
Some things grow in special shapes. They can look like six-sided stars. They can look like three-sided shapes too. These shapes help make things like ice. They even make pretty stones. Do you like shapes?
Early Reader · Change the reading level on the articleHidden-variable theory
Tiny things act in strange ways. They do not always stay in one spot. Some people think there are secret rules. These rules might hide how things work. We want to find the truth. Do you like secrets?
Early Reader · Change the reading level on the articleHierarchy problem
Some forces are very big. Some forces are very small. Gravity is a very weak force. It is much smaller than other forces. We wonder why this is. Is it just luck? Do you wonder about that too?
Early Reader · Change the reading level on the articleHiggs mechanism
Everything has weight. An invisible field is everywhere. It helps things have weight. It fills all of space. This helps us exist. Do you feel heavy today?
Early Reader · Change the reading level on the articleHigh-energy nuclear physics
Scientists smash tiny bits of matter together. They do this to see how things work. These tiny bits move very, very fast. It makes things very hot. This helps us learn about the start of our world. Can you imagine…
Early Reader · Change the reading level on the articleHigh-performance liquid chromatography
A machine helps us see what is in a mix. It uses a fast liquid to move things. The liquid flows through a small tube. This tube separates the parts of the mix. It helps us check our food and medicine. It is very…
Early Reader · Change the reading level on the articleHigh-temperature superconductivity
Some things can move power with no loss. These special things must stay very cold. They work best with liquid nitrogen. This helps us make big magnets. It is like magic! Do you like cold things?
Early Reader · Change the reading level on the articleHistory of classical mechanics
People study how things move. They look at why things fall. They see how objects roll. This helps us learn about our world. It is very fun to watch. Do you like to watch things move?
Early Reader · Change the reading level on the articleHistory of electromagnetic theory
People saw sparks in the sky. They saw fish that give shocks. Some rocks can pull on iron. Long ago, we did not know why. Now we know how it works. It is like magic! Can you find a magnet?
Early Reader · Change the reading level on the articleHistory of energy
Things use power to move. This power helps us do work. It can change from one thing to another. It does not go away. It is all around us. Can you feel it move?
Early Reader · Change the reading level on the articleHistory of general relativity
A man named Einstein had a big idea. He said space can bend. Heavy things make space curve. This is how things pull on each other. It helps us learn about space. Do you like looking at the stars?
Early Reader · Change the reading level on the articleHistory of geomagnetism
The Earth is like a big magnet. It has a force we cannot see. This force helps us find our way. It makes a needle point north. We use this to sail ships. Can you find north today?
Early Reader · Change the reading level on the articleHistory of special relativity
Many smart people studied light. They wanted to know how it moves. Albert Einstein found a new way to think. His big idea changed how we see space. It helps us understand our world. Do you like to learn new things?
Early Reader · Change the reading level on the articleHistory of subatomic physics
Everything is made of tiny bits. These bits are too small to see. They make up all things. They are even smaller than atoms. These bits help make our world. Can you imagine something so small?
Early Reader · Change the reading level on the articleHistory of the periodic table
Everything is made of tiny bits. These bits are called elements. We use a special chart to sort them. It helps us learn about them. It is like a map for science. Do you want to see the map?
Early Reader · Change the reading level on the articleHistory of thermodynamics
People have studied heat for a long time. Long ago, they thought heat was fire. Then, they made tools to see how hot things are. These tools helped us build big engines. Now we use heat to do work. Do you like warm…
Early Reader · Change the reading level on the articleHomi J. Bhabha
Homi Bhabha was a great scientist. He studied how tiny things work. He helped his country learn about science. This helped people use new power. He loved art and music too. Do you like to learn new things?
Early Reader · Change the reading level on the articleHomogeneity (physics)
Some things are the same all over. A piece of glass is one way. A sheet of metal is the same way. It does not change from side to side. This helps things work well. Do you see things that are the same all over?
Early Reader · Change the reading level on the articleHorsepower
We use a special word for power. It is called horsepower. A man used it to measure engines. He wanted to see how strong they were. It helps us know how fast a motor can work. Do you like fast cars?
Early Reader · Change the reading level on the articleHorst Ludwig Störmer
Horst Störmer is a smart man. He studies how tiny things work. He won a very big prize. This prize shows he did great work. He helps us learn about our world. Do you like to learn new things?
Early Reader · Change the reading level on the articleHost–guest chemistry
Some tiny things act like hosts. A host is like a little house. A guest is a smaller thing that goes inside. The host holds the guest tight. This helps things work in our bodies. It is like a tiny hug! Can you find a…
Early Reader · Change the reading level on the articleH-theorem
Tiny bits of gas move fast. They bump into each other. These bumps change how they move. This helps the gas settle down. It makes the gas stay even. Do you think gas moves fast?
Early Reader · Change the reading level on the articleHubbard model
Tiny bits move in solid things. They like to hop from place to place. But they also push each other away. This helps us see how things work. It helps us know if a thing can carry power. Do you like to hop?
Early Reader · Change the reading level on the articleHückel's rule
Some tiny things form a ring. These rings stay very still. They have a special number of parts. This helps the ring stay strong. It is like a magic shape. Do you like shapes?
Early Reader · Change the reading level on the articleHue
Hue is the name for a color. It tells us if a color is red or blue. We see many hues every day. They make our world look pretty. Do you have a favorite color?
Early Reader · Change the reading level on the articleHugh David Politzer
Hugh is a smart man. He studies how tiny things work. He won a big prize for his work. He also likes to play the banjo. It is fun to learn about him. Do you like to play music too?
Early Reader · Change the reading level on the articleHugh Everett III
Hugh was a smart man. He studied how the world works. He had a big idea about many worlds. He thought many things could happen at once. This idea helps us learn today. Do you like to wonder about space?
Early Reader · Change the reading level on the articleHumulene
Some plants have a special smell. This smell comes from hops. It helps make beer smell good. Many plants like pine trees have it too. It is in the air around us. Can you smell plants in your yard?
Early Reader · Change the reading level on the articleHundredweight
A hundredweight is a way to weigh things. It helps us know how heavy things are. Some places use a short way. Other places use a long way. It is a useful tool for us. Can you find something heavy today?
Early Reader · Change the reading level on the articleHuygens–Fresnel principle
Light moves in waves. Each part of a wave makes new tiny waves. These tiny waves join together. This helps light move through space. It also helps light bend. Can you see light bend?
Early Reader · Change the reading level on the articleHydrate
Some things hold water inside. This can change their color. A blue salt can turn pink. This happens when it gets wet. It is like magic! Can you find something wet?
Early Reader · Change the reading level on the articleHydraulics
People use water to do work. Water can push things. It can move big wheels. This helps us make food or tools. It is very helpful. Can you see water moving?
Early Reader · Change the reading level on the articleHydrazine
Some liquids help rockets fly. This liquid is used in space. It helps ships move in the stars. It also helps cars with airbags. It is very strong. We must be careful with it. Do you like looking at the stars?
Early Reader · Change the reading level on the articleHydride
Hydrogen can join with other things. It can make new stuff. Some help make power for cars. Some help dry things out. These things are very useful. Do you like to learn about science?
Early Reader · Change the reading level on the articleHydrofluorocarbon
Some gases help keep things cold. They work in air conditioners. These gases are used in many ways. They can also help stop fires. Using them can make the Earth too warm. We are working to use less. Do you like cold air?
Early Reader · Change the reading level on the articleHydroformylation
We use a special way to make things. It turns gas into new stuff. This helps make soap for you. It even helps make smells for perfume. It is a big job for science. Do you like soap?
Early Reader · Change the reading level on the articleHydrogen-alpha
Some tiny parts make red light. This light is a deep red. It comes from gas in space. It also comes from the Sun. We can see it with tools. It helps us see far away. Can you see the red color?
Early Reader · Change the reading level on the articleHydrogenation
We can add gas to things. This is called hydrogenation. It uses metal to help. This makes things like margarine. It is very useful. Do you like margarine?
Early Reader · Change the reading level on the articleHydrogen atom
Everything is made of tiny bits. One tiny bit is called hydrogen. It has a small center. A tiny part moves around it. This part helps make things like water. It is all around us. Do you see it?
Early Reader · Change the reading level on the articleHydrogen bromide
This is a clear gas. It can mix with water. It helps make new things in a lab. It can be hard on our lungs. We must be very careful. Do you like science?
Early Reader · Change the reading level on the articleHydrogen chalcogenide
Some things are made of water. Water is all over our Earth. It helps us live. Other things in this group smell bad. They can even be bad for us. Can you find water today?
Early Reader · Change the reading level on the articleHydrogen chloride
Some gas is clear. It can turn into a liquid. This liquid is an acid. It can be used in many ways. It helps make things we use. Do you know what an acid is?
Early Reader · Change the reading level on the article