Terrorism
Terrorism is affecting countless countries in the world right now. The topic is hotly debated and a part of the collective fear of our global…
Definition Essay Samples
Using dictionary definitions to write your essay won’t cut it. Check out our examples of definition essays to grasp what it really means to write one.
Opinion
With so many opinions used in the news, in our personal conversations, and in debates, it is worth knowing more about this word. Though we…
Zombie
The word “zombie” is not as clear cut as one might think. It can infer a fictional, undead creature, a state of stupor, or an…
The Atom
How would one find out what types of atoms there were? Today, it does not seem like it should have been difficult to work out…
The Gravitational Field
Given that fields of force are real, how do we define, measure, and calculate them? A fruitful metaphor will be the wind patterns experienced by…
Voltage
Electrical circuits can be used for sending signals, storing information, or doing calculations, but their most common purpose by far is to manipulate energy. We…
The Magnetic Field
If you could play with a handful of electric dipoles and a handful of bar magnets, they would appear fairly similar. For instance, a pair…
The Doppler Effect
Imagine the wave pattern made by the tip of a vibrating rod which is moving across water. If the rod had been vibrating in one…
Temperature
Thermal equilibrium We use the term temperature casually, but what is it exactly? Roughly speaking, temperature is a measure of how concentrated the heat energy…
Defining “Nothing”
One of the trickiest things to define is “nothing.” Why is it difficult to define? Once you try to define “nothing,” it becomes something. Even…
Torque
Force can be interpreted as the rate of transfer of momentum. The equivalent in the case of angular momentum is called torque. Where force tells…
What is Heat?
What is heat? Is it an invisible fluid your bare feet soak up from a hot sidewalk? Can one ever remove all the heat from…
Momentum
A conserved quantity of motion Your first encounter with the conservation of momentum may have come as a small child unjustly confined to a shopping…
Kinetic Energy
The technical term for the energy associated with motion is kinetic energy, from the Greek word for motion (the root is the same as the…
Newton’s Law of Gravity
Kepler’s laws were a beautifully simple explanation of what the planets did, but they did not address why they moved as they did. Did the…
Newton’s Second Law
What about cases where the total force on an object is not zero, so that Newton’s first law does not apply? The object will have…
Newton’s Third Law
Newton created the modern concept of force starting from his insight that all the effects that govern motion are interactions between two objects: unlike the…
Kepler’s Laws
Newton would not have been able to figure out why the planets move the way they do if it had not been for the astronomer…
Newton’s First Law
Newton’s first law: If the total force acting on an object is zero, its center of mass continues in the same state of motion. In…
Differences Between Religion and Faith
Times when religion played a major role in the lives of the majority of people living in Europe and the United States have gone long…