Phase of a wave | A Level Physics

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[@vt.physics]

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[@vt.physics]

Thank you! ☺️

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[@vt.physics]

Glad it was helpful!

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[@vt.physics]

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[@vt.physics]

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[@thricicle2865]

Can you also use this method for a displacement-distance graph? That's the most common type of graph I get for waves.

[@vt.physics]

This method applies to displacement distance graphs too... And that's because a cycle of wave (one wavelength) can be thought of as 360 degree or 2pi radians.

[@unknown-mn9wo]

tysm!

[@teflonrozay1074]

Thanks for the explanation! You are a great teacher. In the phase difference part,can you please shed more light on that? You said, "one is 0° in phase because they are starting from the origin, and the 2nd is 90° out of phase", Pls what makes it 90° out of phase?

[@vt.physics]

One cycle of a wave is 360 degrees. Half of the wave is 180 degrees. So a quarter is 90 degrees

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[@ManCaveAudio]

How to calculate difference for phase of two waves at any cross over point to align them in phase

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[@educationaltechnology8363]

Great thanks very informative but I need to know what a HZ mean in terms of of wave what does a 1 hrtz mean?

[@acel99556]

Its the unit of frequency

[@leejohnson197733]

in the formula i - Ipsin (2pift - phase angle) how do i work out phase? i have a wave form on a graph with the Ip = 10

[@vt.physics]

If you don’t have a wave form that starts from the origin, then you consider it ‘shifted’ by its phase… let’s say it is shifted by half a wave, then the phase is pi

[@leejohnson197733]

@@vt.physics when you say origin do you mean zero? my wav form starts at -10 on the y raises up to +10 and completed one cycle in 0.001m/s

[@leejohnson197733]

@@vt.physics how do you calculate the phase angle if i have freq, time and the other elements?

[@abdulrahimnaser]

hi, for a (cosx) function or any other function that doesn't start from 0 displacment, what is the phase for the first particle?

[@vt.physics]

For a cosine graph, the phase will be 90 degrees when time t=0

[@abdulrahimnaser]

@@vt.physics and at time = 3/4T , will the phase be 0 for a cosine graph?

[@vt.physics]

@@abdulrahimnaser You got it!

[@II2023II]

The phase means the degree of the wave right?

[@vt.physics]

It tells you where in the cycle that particular point in the wave is. We can use degrees or radians for this angle.

[@boboom4657]

A is moving downwards ,no upwards...we're talking about Progressive waves in here ,As the wave progresses forward..the particle A must ve move downwards and So is G ,And so on,Right?

[@vt.physics]

You would be correct if we were looking at a displacement-displacement (or distance) graph for a wave. But I've shown you a displacement-time graph in the video, so you can think of the graph as tracking the position of one single particle in the wave as time progresses. So the particle is going through an oscillation from its equilibrium position... vertically upwards then downwards. Hope this helps the explanation.

[@boboom4657]

Thank you

[@Eyebroooo]

Upper moon 3

[@farisaj2348]

is B in phase with C?

[@vt.physics]

B and C are not in phase because they are at a different point in the cycle of the wave

[@MarcusReginald-l7h]

Young Thomas Wilson Kimberly Jones Donald