AskScience Panel of Scientists XXV

---

• AskScience Panel of Scientists XXV
• Why does the speed of light being constant for all observers imply spacetime is non-Euclidean?
• If our ears locate the direction which a sound comes from by the time lag between our two ears, how does it determine if it's in front or behind of us?
• Does the Hoover Dam need the water from Lake Mead to stay structurally sound?
• What makes the oceans so salty? Was it a one-time event, or does this naturally happen with giant pools of water? How come the Great Lakes don’t turn to salt water?
• Do animals get mental illnesses? What does it look like for them?
• How closely related are the 600 putative ubiquitin E3 ligases from each other?

AskScience Panel of Scientists XXV Posted: 24 Jul 2021 10:25 PM PDT Please read this entire post carefully and format your application appropriately. This post is for new panelist recruitment! The previous one is here. The panel is an informal group of Redditors who are either professional scientists or those in training to become so. All panelists have at least a graduate-level familiarity within their declared field of expertise and answer questions from related areas of study. A panelist's expertise is summarized in a color-coded AskScience flair. Membership in the panel comes with access to a panelist subreddit. It is a place for panelists to interact with each other, voice concerns to the moderators, and where the moderators make announcements to the whole panel. It's a good place to network with people who share your interests! ------------------- You are eligible to join the panel if you: Are studying for at least an MSc. or equivalent degree in the sciences, AND, Are able to communicate your knowledge of your field at a level accessible to various audiences. ------------------- Instructions for formatting your panelist application: Choose exactly one general field from the side-bar (Physics, Engineering, Social Sciences, etc.). State your specific field in one word or phrase (Neuropathology, Quantum Chemistry, etc.) Succinctly describe your particular area of research in a few words (carbon nanotube dielectric properties, myelin sheath degradation in Parkinsons patients, etc.) Give us a brief synopsis of your education: are you a research scientist for three decades, or a first-year Ph.D. student? Provide links to comments you've made in AskScience which you feel are indicative of your scholarship. Applications will not be approved without several comments made in /r/AskScience itself. ------------------- Ideally, these comments should clearly indicate your fluency in the fundamentals of your discipline as well as your expertise. We favor comments that contain citations so we can assess its correctness without specific domain knowledge. Here's an example application: Username: /u/foretopsail General field: Anthropology Specific field: Maritime Archaeology Particular areas of research include historical archaeology, archaeometry, and ship construction. Education: MA in archaeology, researcher for several years. Comments: 1, 2, 3, 4. Please do not give us personally identifiable information and please follow the template. We're not going to do real-life background checks - we're just asking for reddit's best behavior. However, several moderators are tasked with monitoring panelist activity, and your credentials will be checked against the academic content of your posts on a continuing basis. You can submit your application by replying to this post. submitted by /u/AskScienceModerator [link] [comments]

Why does the speed of light being constant for all observers imply spacetime is non-Euclidean? Posted: 24 Jul 2021 01:18 PM PDT I'm a layman when it comes to physics, so the question may be ill-formed and/or incorrectly framed. I'm trying to really grasp the nature of (flat) spacetime. I'm watching this video, and she says how there's no way for the speed of light to be constant for all observers if spacetime were Euclidean. If I take the speed of light being constant for all observes as axiomatically true, then I feel like I'm close to grasping flat spacetime, but I don't really understand why this statement has to be the case. I'm guessing there's a simple mathematical proof that shows why the spacetime is basically a series of hyperbolic contours -- can someone point me to that? submitted by /u/millenniumpianist [link] [comments]

If our ears locate the direction which a sound comes from by the time lag between our two ears, how does it determine if it's in front or behind of us? Posted: 24 Jul 2021 05:49 PM PDT submitted by /u/Timegoal [link] [comments]

Does the Hoover Dam need the water from Lake Mead to stay structurally sound? Posted: 24 Jul 2021 12:42 PM PDT I've been reading articles about how low the water level is in Lake Mead and it got me thing about two things. Does the concrete that was used to build the dam rely at all on being continuously wet (i.e. is the concrete prone to crumbling prematurely when it's dry for extended periods of time)? Since the dam was built to hold back tremendous pressure from the lake now that the lake is so low is there concern that the dam could collapse into the lake because the water isn't there to balance things out? The thing was built during the Great Depression and wasn't sure, at the time, if they ever factored the lake ever drying up in their engineering plans. submitted by /u/frupp110 [link] [comments]

What makes the oceans so salty? Was it a one-time event, or does this naturally happen with giant pools of water? How come the Great Lakes don’t turn to salt water? Posted: 23 Jul 2021 08:27 PM PDT submitted by /u/BayBreezy17 [link] [comments]

Do animals get mental illnesses? What does it look like for them? Posted: 23 Jul 2021 10:58 PM PDT submitted by /u/thermal7 [link] [comments]

How closely related are the 600 putative ubiquitin E3 ligases from each other? Posted: 23 Jul 2021 11:59 PM PDT submitted by /u/inquilinekea [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States