Modern Atomic Theory Part One
... • According to this theory, if the wavelength of light is made shorter, or the light wave’s intensity made brighter, more electrons should be ejected. – Remember that the energy of a wave is directly proportional to its amplitude and its frequency. – This idea predicts if a dim light were used there ...
... • According to this theory, if the wavelength of light is made shorter, or the light wave’s intensity made brighter, more electrons should be ejected. – Remember that the energy of a wave is directly proportional to its amplitude and its frequency. – This idea predicts if a dim light were used there ...
EM Waves
... •Some charge accumulates on each rod •This creates an electric field •The charging involves a current •This creates a magnetic field •It constantly reverses, creating a wave •Works best if each rod is ¼ of a wavelength long •The power in any direction is ...
... •Some charge accumulates on each rod •This creates an electric field •The charging involves a current •This creates a magnetic field •It constantly reverses, creating a wave •Works best if each rod is ¼ of a wavelength long •The power in any direction is ...
Important Equations in Physics for IGCSE course
... bend inside the same medium then this is called (TIR) Electromagnetic Spectrum:→ this way the frequency decreases and wavelength increases Gamma rays ↔ X-rays ↔ UV ↔ Visible light ↔ IR ↔ Micro waves ↔ Radio waves Colours of visible VIBGYOR (from bottom-up) spectrum (light) Speed of light In air: 3×1 ...
... bend inside the same medium then this is called (TIR) Electromagnetic Spectrum:→ this way the frequency decreases and wavelength increases Gamma rays ↔ X-rays ↔ UV ↔ Visible light ↔ IR ↔ Micro waves ↔ Radio waves Colours of visible VIBGYOR (from bottom-up) spectrum (light) Speed of light In air: 3×1 ...
physics_question bank
... It is exactly the value of the conduction current in the lead wires. Thus the displacement current satisfies the basic condition that the current is continuous. The sum I c I d has the same value along the entire path (both inside and outside the capacitor plates), although individually the two cu ...
... It is exactly the value of the conduction current in the lead wires. Thus the displacement current satisfies the basic condition that the current is continuous. The sum I c I d has the same value along the entire path (both inside and outside the capacitor plates), although individually the two cu ...
PSB Final Review
... 2. The direction and length of a straight line from the starting point to the ending point of an object’s motion is ____________________. 3. Displacement and velocity are examples of ____________________ because they have both magnitude and direction. 4. Speed is measured in units of _______________ ...
... 2. The direction and length of a straight line from the starting point to the ending point of an object’s motion is ____________________. 3. Displacement and velocity are examples of ____________________ because they have both magnitude and direction. 4. Speed is measured in units of _______________ ...
Wavelength
In physics, the wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats, and the inverse of the spatial frequency. It is usually determined by considering the distance between consecutive corresponding points of the same phase, such as crests, troughs, or zero crossings and is a characteristic of both traveling waves and standing waves, as well as other spatial wave patterns. Wavelength is commonly designated by the Greek letter lambda (λ). The concept can also be applied to periodic waves of non-sinusoidal shape. The term wavelength is also sometimes applied to modulated waves, and to the sinusoidal envelopes of modulated waves or waves formed by interference of several sinusoids.Assuming a sinusoidal wave moving at a fixed wave speed, wavelength is inversely proportional to frequency of the wave: waves with higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths.Wavelength depends on the medium (for example, vacuum, air, or water) that a wave travels through.Examples of wave-like phenomena are sound waves, light, and water waves. A sound wave is a variation in air pressure, while in light and other electromagnetic radiation the strength of the electric and the magnetic field vary. Water waves are variations in the height of a body of water. In a crystal lattice vibration, atomic positions vary.Wavelength is a measure of the distance between repetitions of a shape feature such as peaks, valleys, or zero-crossings, not a measure of how far any given particle moves. For example, in sinusoidal waves over deep water a particle near the water's surface moves in a circle of the same diameter as the wave height, unrelated to wavelength. The range of wavelengths or frequencies for wave phenomena is called a spectrum. The name originated with the visible light spectrum but now can be applied to the entire electromagnetic spectrum as well as to a sound spectrum or vibration spectrum.