berkeman's latest activity
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berkeman reacted to Muu9's post in the thread Other Collection of Free Online Physics Books and Lecture Notes (Part 2) with
Informative.
I do not think these are freely available online -
Thank you so much for your help! It matches up with my FEA if my equations look wrong let me know. Other than that thank you so much for...
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berkeman reacted to Herman Trivilino's post in the thread Proof of law of sines using cross product with
Like.
Not sine, the Law of Sines. For any triangle the length of a side is proportional to the sine of the angle opposite to it. -
berkeman reacted to rcgldr's post in the thread I Acceleration on an electric unicycle, how much does the rider have to lean? with Informative.
The early ones did Old EUC - SBU With the low foot pegs, the EUC couldn't be tilted much, and combined with the narrow tire couldn't...
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berkeman reacted to yatharthvishwa's post in the thread Hii, I'm Yatharth. I'm here because I'm interested in physics! with Like.
Hello everyone, a cool friend of mine introduced me to this forum because she loves physics!!, and I wanted to join a community like...
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berkeman replied to the thread A Does direct/indirect band gap occur in solids other than semiconductors?.Please calm down. The reply by @Baluncore was meant to be helpful without outright giving you the answer to your question. It is...
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berkeman replied to the thread A Does direct/indirect band gap occur in solids other than semiconductors?.Thread is closed temporarily for Moderation.
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berkeman replied to the thread Rediscovering physics to make the best of my research group.Welcome to PF, and good work! :smile:
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berkeman reacted to Celesty's post in the thread Rediscovering physics to make the best of my research group with Like.
I have joined a research group following successes I have had forensic dowsing. By this I mean I exploring minute detail in my work, not...
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berkeman reacted to haruspex's post in the thread Proof of law of sines using cross product with Like.
When given a task like this, you have to start with the definitions you are expected to work from. State the law of sines and the...
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berkeman replied to the thread I Acceleration on an electric unicycle, how much does the rider have to lean?.BTW, EUCs don't have seats, so I guess the feet tilt thing is a big part of controlling the accel/decel. I need to watch this video...
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berkeman replied to the thread I Acceleration on an electric unicycle, how much does the rider have to lean?.Ah, that makes sense. Do you have any idea how that translates into the OP's EUC? I think EUCs have platforms for the rider's feet...
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berkeman reacted to jbriggs444's post in the thread I Acceleration on an electric unicycle, how much does the rider have to lean? with Informative.
I can ride a real unicycle. One cannot spontaneously lean forward. Instead, one pedals slightly back. This moves the contact point...
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berkeman replied to the thread Proof of law of sines using cross product.What problem? What do you know about how to compute cross products?
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berkeman reacted to Baluncore's post in the thread I Acceleration on an electric unicycle, how much does the rider have to lean? with Informative.
A unicycle is an example of an inverted pendulum. https://en.wikipedia.org/wiki/Inverted_pendulum
