DaveE's latest activity
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DaveE reacted to nescientist's post in the thread I hope to learn more and realize a grasp of nature's wonders! with
Like.
Well, I haven't applied much physics(or even thinking from that framework) since University, and I miss it. So, I'm picking up old books... -
DaveE reacted to PeterDonis's post in the thread Undergrad Question about increasing laser power with Like.
The OP question has been sufficiently addressed. Thread closed. Thanks to all who participated.
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DaveE reacted to Baluncore's post in the thread Engineering Voltage across inductor is somehow negative despite diodes? with Like.
v = L⋅ di/dt As the current rises and falls, di/dt changes sign. What does that do to the voltage across the inductor? While V2 is...
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DaveE reacted to berkeman's post in the thread Undergrad Question about increasing laser power with
Haha.
1.21 ggigawatts. -
DaveE replied to the thread Undergrad Question about increasing laser power.Home built confocal (and similar) resonators aren't THAT finicky. Many people have built low performance, low reliability, and often...
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DaveE replied to the thread Undergrad Question about increasing laser power.Virtually all lasers use this, or similar, techniques internally to function optimally. You won't make their design better by adding...
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DaveE reacted to .Scott's post in the thread Undergrad Question about increasing laser power with Like.
There are two kinds of lasers, continuous wave (CW) and pulse. Since you're thinking of CW, that is what I will address. Most CW...
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DaveE replied to the thread Weird News Compilation.The commercial airline industry has an amazing safety record mostly based on the creation of structured rules and compliance. The...
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Hello everyone, It's been a long time since I posted anything here on PF. After graduating in 2017 with a bachelors degree in EE, I...
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DaveE reacted to pasmith's post in the thread Undergrad Limit behaviour of Fibonacci sequence with Like.
There is a much easier way to arrive at these results. From ##a_{n+1} = 1 + a_n^{-1}## and the definition of ##\varphi## we can obtain...
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DaveE reacted to PeroK's post in the thread Undergrad Limit behaviour of Fibonacci sequence with Like.
I thought this might be quite interesting to anyone who hasn't seen it before. Consider any Fibonacci sequence, where ##F_1 > F_0 \ge...
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Hello everyone, I’m a new member. I joined this forum to learn more about physics and related topics. I’m still a beginner, but I’m...
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Hello everyone! I'm a college student with a passion for math, physics, philosophy, etc. I wanted to get more involved with the...
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DaveE reacted to Baluncore's post in the thread Design example for commercial high speed pcb with Like.
1. Each differential pair must pass through a separate hole in all the other layers. 2. Look up the data on the differential outputs...