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Physics

Prep for physics entrance exams the right way. Review summaries, watch animations, and take unlimited practice exams. This animation demonstrates the transmission of sound.
Experiments
Heat: Expansion Of Solid
Types Of Thermometers
Working Of Voltaic Cell
Archimedes Principle
How To Use Spherometer
Faraday Cage
The Wimshurst Machine
Physics Demo - Strobes
Magnetic Deflection
Magnetic Motors
Conducting Glass
Science Experiments
Black Fire Snake
Home Science
Make Hot Ice
Red Bull And Milk Experiment
A Science Trick


Mechanics
Damped Oscillation
Torque, Levers - Universal Law
Newton's Laws Of Motion
Motion Basics - In A Plane
Simple Harmonic Motion
2nd Law Of Motion
Friction
Work And Energy
Momentum
Rotational Inertia
Heating
Thermodynamics
Internal Energy
Frictional Forces - Blocks
Graph Of Stress Vs Strain
Young's Modulus
Work Done - Expanding Gas
Bernoulli's Equation
Fluid Mechanics - Static Pressure
Flow Equation Through A Pipe
Sound Pipe - Open At Both Ends


Electricity
Battery Energy And Power
Zener Diodes In Circuits
Electric Circuits
Semiconductors
Fourier Transform
Inductors And Inductance
Grounding And Shielding
Capacitors And Capacitance
Transistors - Field Effect
Units, Measurements - Amperes
Voltage, Current, Electricity
Resistors - Ohm's Law
AC Current Impedance
DC Circuits, Resistance
Elementary Charge
Vector Field
Electric Field Of A Dipole
Contour Lines
AC Generator
Three Phase Electric Power
Transmission Lines
Boost Converters: Electric Power
Transformers
Voltage Rectifiers
Hydroelectric Turbine


Light
Photometry - Illuminance
Optics -Simple Microscope
Photoelectric Effect
Coherent Light Waves - Lasers
Lenses, Refraction
Wave Equation
Lenses - Ray Diagrams
Convex Mirror - Ray Diagram
Convex Mirrors
Double Slit Experiment
The Physics Of Colour
Crystallography


Electromagnetic Waves
Electromagnetic Induction
Ferrofluid - Magnetic Liquid
Standing Waves
X-Rays
Radioactive Alpha Decay
Weak Nuclear Force


Quantum Physics
Matter As A Wave
Matter As A Particle
Gravitational Waves
Light And The Quantum
Speed Of Light
Einstein's Universe
Twin Paradox - General Relativity
Relativity - Time Dilation
Moon's Gravitation
Gravity Of Moving Mass
Quantum Fields
Particle Accelerators
Black Holes
Quantum World
Quantum Tunneling
Quantum Spin
Quantum Wave Function
Quantum Operators
Quarks, Strong Nuclear Force
Delayed-Choice Quantum Eraser


Astronomy
The Moon
Solar System
Jupiter
Mars
Saturn
Earth
Hubble Images
Cosmos
Opportunity Rover
Spacecraft
Orbital View
Flyover: Planets And Moons
Our Solar System's Moons
NASA's Cassini
Documentary


The Physics of Perception

Contact forces are those types of forces that result when the two interacting objects are perceived to be physically contacting each other. Examples of contact forces include frictional forces, tensional forces, normal forces, air resistance forces, and applied forces. Not only do electrostatics permeate the events of everyday life, without the forces associated with static electricity, life as we know it would be impossible. Electrostatic forces - both attractive and repulsive in nature - hold the world of atoms and molecules together in perfect balance. Without this electric force, material reality at the macroscopic level of perception would not exist.

Just as human beings have eyes for the sensory detection of light and color, so we are equipped with ears for the detection of sound waves. We seldom take the time to ponder the characteristics and behaviors of sound and the mechanisms by which sounds are produced, propagated, and detected. Sound is a wave that is created by vibrating objects and propagated through a medium from one location to another.

As light travels through a given medium, it travels in a straight line. However, when light passes from one medium into a second medium, or through a lens, the light path bends, and refraction takes place. The refraction occurs precisely at the boundary. Once the light has crossed the boundary between the two media, it continues to travel in a straight line. Only now, the direction of that line is different than it was in the former medium. When viewing an object, if light from that object changes media on the way to your eye, a visual distortion is likely to occur.


Tesla Valve


Nikola Tesla had invented a very interesting one-way valvular conduit. Let's understand the physics of the undulating fluid dynamics of the flow.

Magnetic Field


This animation will describe the production of a magnetic field around a current carrying circular coil, and discuss finding the direction of magnetic field lines thus generated.

Physical and Chemical Changes


Physical changes of state and chemical changes explained. A chemical reaction results via changes in electron orbital energy states, while a physical change takes place due to interactions of molecular forms but not an alteration of chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting, whereas some physical changes are boiling, melting, freezing, and shredding.

Archimedes' Principle


Archimedes' principle, physical law of buoyancy, discovered by the ancient Greek mathematician and inventor Archimedes, stating that any body completely or partially submerged in a fluid (gas or liquid) at rest is acted upon by an upward, or buoyant, force, the magnitude of which is equal to the weight of the fluid.

Physics Job Listings

Mechanical engineers typically need a bachelor's degree in mechanical engineering or mechanical engineering technology. In the US, most undergraduate mechanical engineering programs are accredited by the Accreditation Board for Engineering and Technology (ABET). Mechanical engineering programs usually include courses in mathematics and life and physical sciences, as well as engineering and design. Mechanical engineering technology programs focus less on theory and more on the practical application of engineering principles. They may emphasize internships and co-ops to prepare students for work in industry.


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Engineering Entry-level Positions in Multiple Boeing Locations
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Health Physicist--Entry Level
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New full-time employees accrue 15 days of paid time off (PTO) per year and the company recognizes 11 holidays.
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Trader (Entry Level) - Remote (Applicants should have college graduation dates between December 2021 - June 2022)
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JOB SUMMARY: This position plans and implements an instructional program and provides related educational services for students.
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These individuals will provide general assistance to radiation protection personnel performing contamination and radiation control functions.
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This position will assist in performing research on modeling of magnetic, electrochemical and magneto-electrochemical (and other related physics) systems…
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B.S. or M.S. degree in Computer Science or related technical field (i.e. math, physics or data science). 20 days of paid time off and a 2-week winter break…
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