I'm so glad you are still making these videos. Your channel is the best source microscopy concepts for learning. I couldn't even imagine the amount of stuff that went into them
Thanks. Stay tuned for episode 5 in a couple of weeks. Very few people are watching these videos - maybe they are too technical so only for specialist audiences? Either way, I'm glad some people appreciate them.
Very informative, thanks! Just one thing that would have helped my understanding: At 16:20 when you mention the arcs getting larger over distance, it would have been nice to have seen an explicit representation of the growing arcs on the figure
Yes - I tried to show that with the dotted lines which mark out one specific arc - but I agree I could have made this clearer. For anyone reading this: The line length 'g' is the phase difference between yellow and white wavefront lines and is this length g is the same at one end of the arc marked by the dotted lines. At the other end of this arc the phase difference is always zero between those yellow and white wavefronts (because here the yellow and white lines cross) so the change in phase difference (g minus 0) is the same despite the arc between the dotted lines getting longer and longer as you go further from the wave. I hope that makes it clear.
For physicists: To be clear, when I speak of a 'group of waves' I also include a group of samples from a single wave. The members of a group don't have to come from separate sources.
I'm so glad you are still making these videos. Your channel is the best source microscopy concepts for learning. I couldn't even imagine the amount of stuff that went into them
Thanks. Stay tuned for episode 5 in a couple of weeks. Very few people are watching these videos - maybe they are too technical so only for specialist audiences? Either way, I'm glad some people appreciate them.
Very informative, thanks!
Just one thing that would have helped my understanding:
At 16:20 when you mention the arcs getting larger over distance, it would have been nice to have seen an explicit representation of the growing arcs on the figure
Yes - I tried to show that with the dotted lines which mark out one specific arc - but I agree I could have made this clearer. For anyone reading this: The line length 'g' is the phase difference between yellow and white wavefront lines and is this length g is the same at one end of the arc marked by the dotted lines. At the other end of this arc the phase difference is always zero between those yellow and white wavefronts (because here the yellow and white lines cross) so the change in phase difference (g minus 0) is the same despite the arc between the dotted lines getting longer and longer as you go further from the wave. I hope that makes it clear.
For physicists: To be clear, when I speak of a 'group of waves' I also include a group of samples from a single wave. The members of a group don't have to come from separate sources.