pbuk's latest activity
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Ppbuk replied to the thread Clues to Homing Pigeon Navigation Mechanism.Yes, and the rest of the SA article seems to check out too. Looks like my skeptic spider sense was over-excited by the publication date!
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Ppbuk reacted to Hornbein's post in the thread Clues to Homing Pigeon Navigation Mechanism with
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The article is based on real research Helbig A. J. (1991). Inheritance of migratory direction in a bird species: a cross-breeding... -
Ppbuk replied to the thread Clues to Homing Pigeon Navigation Mechanism.What is the date on that SA article? And if you missed that, surely the bit about mating a south east migrator with a south west...
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Ppbuk replied to the thread High School Why would sailboat racers prefer a full keel over a fin keel?.This thread is about sailing boats, that well-known monstrosity has no place here :wink:
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Ppbuk replied to the thread High School Why would sailboat racers prefer a full keel over a fin keel?.Yes, I am not sure why I wrote what I did (now corrected) - I was tired after a long day sailing!
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Ppbuk replied to the thread What do computer science engineers do?.Passwords should be hashed rather than encrypted. Use password_hash with the default bcrypt and automatic random salt but consider...
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Ppbuk replied to the thread What do computer science engineers do?.Yes, it looks like it. session_start must be called before any output is sent. It seems like you are unintentionally sending multiple...
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Ppbuk replied to the thread What do computer science engineers do?.I wouldn't recommend JWTs for a single-server site, stick with stateful sessions.
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Ppbuk replied to the thread High School Why would sailboat racers prefer a full keel over a fin keel?.Different posts here have provided parts of the answer, I'll attempt a summary for this specific question: In order to offset the...
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Ppbuk replied to the thread What do computer science engineers do?.These articles are 15 years old and do not contain information that is useful today. In 2026 the standard for stateless authentication...
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Ppbuk replied to the thread "Critical" Triangle Problem.No, we do not need to look for rational tangents. We can actually ignore condition 1 altogether: All we need is condition 2: Niven's...
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Ppbuk reacted to Dale's post in the thread High School Deriving the "third" kinematic equation using graphs with
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This one is no less convincing than the others. Indeed as @pbuk said, this is procedurally exactly the same as what you did for the... -
Ppbuk replied to the thread High School Deriving the "third" kinematic equation using graphs.Indeed. If the OP is satisfied that they can "derive" ## v = v_0 + at ## by plotting ## v \ vs \ t ## and observing the slope then how...
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Ppbuk reacted to Dale's post in the thread High School Deriving the "third" kinematic equation using graphs with
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No, he says that it cannot be the one he showed (##v## vs ##t##). He didn't show ##v^2##. So all he needs is that pointer: use ##v^2##. -
Ppbuk reacted to A.T.'s post in the thread High School Deriving the "third" kinematic equation using graphs with
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Yes, by multipling ##KE = KE_0 + Fs## with ##2/m##. But seriously, since eq (3) can be easily derived from eq (1) and eq (2), what is...