By: Adewale Olowode
The wattage rating is a very important parameter in resistors.It indicates the maximum amountof power a resistor can dissipate as heat before drastically changing value or burning up.Thatis,if power is the time rate of doing work,and energy can be changed from...
By: Holly Golightly
How often have you found yourself tailing the car in front of you? Be honest.Braking distance and reaction time is something that we all tend to forget when driving along in our haste to get to wherever we are going.The trouble is you...
How nuclear fusion keeps the sun shining
By: Chiukwubuujundu Onu
Physically, the universe is composed of matter and energy. We (intelligent and inquisitive humankind) do not yet know how energy and matter came to be. But we now know somethings about them, and some of the consequences of their interactions. In fact, matter and energy...
By: Peggy Barnett
Like a bird, an airplane can fly because it has wings. Without wings, an airplane would become a rocket, which quickly plummets to earth when deprived of the thrust required for its motion across the sky.Wings are found on all types of airplanes: model...
By: Ian Loft
During the first half of last century a great deal of experimentation into revolutionary methods of propulsion became a duopoly between rockets and jets, both vying for dominance in the pre-WWII years. The Chinese in 1232AD used rockets as a weapon of war against invading...
How light passes through solid matter
By: TG Lambini
How can light get through a glass window and I can't?Light is different from you and I. For one thing, we have mass. That means here on earth, where we have gravity, we tend to stay on the ground. That's good for us -...
By: Ian Loft
In the early 1990's I worked in a power station where my job required frequent excursions into the generator room, inside control booths, behind the alternators and around the huge power bus bars carrying many hundreds of amps of electric current. I soon learned to...
By: Ian Loft
Airplanes fly because of a proportional combination of thrust (or power) and lift. A huge power source requires less lift, as we would find in some of the high performance jet fighters while the reverse may apply for light aircraft where the wings are designed...
The basics of acoustics
By: Lynne Conte
Understanding the basics in musical acoustics, you would have to know what sound does inside a room or venue. The science of basic acoustic is about natural vibes and laws of sound in which the sensation of sound and communication produce vibration motion to the...
The physics of pole vaulting
By: Karen Rogers
Take one fast sprinter with a pole, add in gravitational potential energy converted to kinetic energy, and you have the physics for a successful pole vault!Kinetic energy is the energy of motion. All moving objects, including the wind, roller coasters or our sprinting pole...

 

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