AskScience AMA Series: We're a group of paleontologists here to answer your paleontology questions! Ask us anything! | AskScience Blog

Pages

Thursday, February 16, 2017

AskScience AMA Series: We're a group of paleontologists here to answer your paleontology questions! Ask us anything!

AskScience AMA Series: We're a group of paleontologists here to answer your paleontology questions! Ask us anything!


AskScience AMA Series: We're a group of paleontologists here to answer your paleontology questions! Ask us anything!

Posted: 16 Feb 2017 06:01 AM PST

Hello /r/AskScience! Paleontology is a science that includes evolution, paleoecology, biostratigraphy, taphonomy, and more! We are a group of invertebrate and vertebrate paleontologists who study these topics as they relate to a wide variety of organisms, ranging from trilobites to fossil mammals to birds and crocodiles. Ask us your paleontology questions and we'll be back around noon - 1pm Eastern Time to start answering!


Answering questions today are:

  • Matt Borths, Ph.D. (/u/Chapalmalania): Dr. Borths works on the evolution of carnivorous mammals and African ecosystems. He is a postdoctoral researcher at Ohio University and co-host of the PastTime Podcast. Find him on Twitter @PastTimePaleo. ​

  • Stephanie Drumheller, Ph.D. (/u/UglyFossils): Dr. Drumheller is a paleontologist at the University of Tennessee whose research focuses on the processes of fossilization, evolution, and biology, of crocodiles and their relatives, including identifying bite marks on fossils. Find her on Twitter @UglyFossils. ​

  • Eugenia Gold, Ph.D. (/u/DrEugeniaGold): Dr. Gold studies brain evolution in relation to the acquisition of flight in dinosaurs. She is a postdoctoral researcher at Stony Brook University. Her bilingual blog is www.DrNeurosaurus.com. Find her on Twitter @DrNeurosaurus. ​

  • Talia Karim, Ph.D. (/u/PaleoTalia): Dr. Karim is the Invertebrate Paleontology Collections Manager at the University of Colorado Museum of Natural History and instructor for the Museum Studies Program at CU-Boulder. She studies trilobite systematics and biostratigraphy, museum collections care and management, digitization of collections, and cyber infrastructure as related to sharing museum data. ​

  • Deb Rook, Ph.D. (/u/DebRookPaleo): Dr. Rook is an independent paleontologist and education consultant in Virginia. Her expertise is in fossil mammals, particularly taeniodonts, which are bizarre mammals that lived right after the non-avian dinosaurs went extinct! Find her on Twitter @DebRookPaleo. ​

  • Colin Sumrall, Ph.D.: Dr. Sumrall is an assistant professor in the Department of Earth and Planetary Sciences at the University of Tennessee. His research focuses on the paleobiology and evolution of early echinoderms, the group that includes starfish and relatives. He is particularly interested in the Cambrian and Ordovician radiations that occurred starting about 541 and 500 million years ago respectively.

submitted by /u/AskScienceModerator
[link] [comments]

Is there a maximum temperature a microwave oven can heat up a piece of food?

Posted: 15 Feb 2017 06:51 PM PST

More specifically, will it heat up 1 pound of chicken and one pound of pie to the same (max) temperature, or will one inherently get hotter than the other? What determines the maximum temperature, and what item do we think could get the absolute hottest due only to a microwave oven? Thanks!

submitted by /u/MrHanSolo
[link] [comments]

how can oceanic dissolved oxygen decline if an increase in gas temperature usually means increase in dissolved oxygen?

Posted: 15 Feb 2017 03:51 PM PST

If a conductive metal in wiring for a home is in liquid/melted form, will it still conduct electricity as well or at all?

Posted: 15 Feb 2017 11:28 PM PST

If the wiring in a house, copper for example was melted but still held in a linear form within the rubber insulation, would it still conduct electricity as well?

submitted by /u/RavioliMaster
[link] [comments]

When photons blueshift while they approach a black hole, does this mean they add more energy to the black hole than what their energy level was before being blueshifted?

Posted: 15 Feb 2017 01:31 PM PST

In regards to Bernoulli's principle, why do the behaviors of velocity/pressure become opposite when a fluid is traveling through an orifice at supersonic speed?

Posted: 15 Feb 2017 02:56 PM PST

Why do some people who contract infections show no symptoms?

Posted: 15 Feb 2017 05:28 PM PST

How are some (most) cases of influenza, etc asymptomatic? Does this mean the body has fought and removed the virus without giving symptoms?

submitted by /u/vsbobclear
[link] [comments]

How far does electricity travel in water?

Posted: 15 Feb 2017 04:43 PM PST

No clue why this just popped into my head but i was wondering how far any given current can travel in water. or how you might be able to calculate. i'm sure the salinity also has something to do with it too!

submitted by /u/ackley14
[link] [comments]

How much snow would cover the world if an ice age occurred?

Posted: 15 Feb 2017 08:19 AM PST

How much snow would cover the world if the entire world went in to a severe ice age? How much of the evaporated water that is already in the air would cover the ground? After so long of it being freezing outside all the moisture would forever be frozen and no more water could evaporate?

submitted by /u/UniqueUsername789
[link] [comments]

True versus false vacuums or ground states are often explained with a certain graph. What do the axes of this graph represent in terms of QFT, if anything?

Posted: 15 Feb 2017 11:45 PM PST

The kind of graph in question looks like this: False Vacuum Graph

Often a metaphor of placing a ball somewhere on the graph and letting it roll is used to explain true and false vacuum, metastability, and other such things.

This is a great way to make things intuitive, but I'm having trouble understanding what it actually means for the ball to move on the graph. The y-axis seems to be some measure of energy, but what's the x-axis? (or what does it 'represent' if the value isn't necessarily a scalar)?

submitted by /u/AlphaModder
[link] [comments]

What number would our number system have to be based on for PI to be equal to 3.2?

Posted: 15 Feb 2017 09:14 PM PST

There is a picture of a piece of wood under an electron microscope on the front page. If the microscope was 5x more powerful, would the picture still look the same? At what point do you reach an end to magnification where you cant see any smaller details?

Posted: 15 Feb 2017 06:26 PM PST

Modern CPU's have > 1 Billion transistors... are all of them actually used?

Posted: 15 Feb 2017 11:51 AM PST

Just because there exists a transistor on the chip, that doesn't necessarily mean the chip itself is designed to use the transistor, right?

If this is the case, we should see either more complex CPU's and/or more efficient CPU's as niche solutions are given hardware space, right?

submitted by /u/GregoryPanic
[link] [comments]

How do I see an elliptic curve is topologically equivalent to a torus without using elliptic functions?

Posted: 15 Feb 2017 09:00 AM PST

How can maser emission be unpolarized?

Posted: 15 Feb 2017 08:44 AM PST

I was reading that:

However, unlike Galactic sources such as W3(OH), the emission is unpolarized and the 1667 MHz line is stronger than the 1665 MHz line.

but how is this possible? Does not the 1665 MHz line and 1667 MHz line correspond to a particular transition and dipole moment? Won't emitted photons naturally have a polarization?

Furthermore, they state:

The characteristics of the λ18 cm OH mega-maser emission differ from those of Galactic maser sources, such as the main line intensity ratio (T1667MHz/T1665 MHz > 1), large linewidth (>100 km s−1), and unpolarized emission.

But why is unpolarized emission expected from extragalactic masers (arising near AGN) and not galactic ones (arising in circumstellar and interstellar environments)?

submitted by /u/CallMeDoc24
[link] [comments]

Can Real numbers be partitioned into two dense, uncountable partitions?

Posted: 15 Feb 2017 09:24 AM PST

I have just started taking a Real Analysis course and the prof. introduced the concept of dense sets. And every example given in the class split R into two dense partitions of different sizes. So I was wondering if breaking R into two equal partitions violates some fundamental result?

submitted by /u/MutedBanshee
[link] [comments]

Why would solving the ABC conjecture be of importance to us?

Posted: 15 Feb 2017 05:58 AM PST

Hi all

I am most definitely not a certified mathematician but I really enjoy reading about math and number theory (perhaps in another life I would have liked to have been one).

Anyhow, why would solving the ABC conjecture be of importance to us? And also why is the proof given by Shinichi Mochizuki so difficult to peer review and confirm?

Is it not possible that the math gets so abstract and convoluted after ten's of pages with proofs building on proofs made in the same text, that close to anything can be solved by using enough back and forth math (my layman's proposal here)? Or is the incredibly complicated proof to this relatively simple looking conjecture (from a layman's perspective) a whole new level of genius?

submitted by /u/georgelappies
[link] [comments]

What differentiates the overlap regions between Gamma & X-Rays?

Posted: 15 Feb 2017 07:42 AM PST

On the EM spectrum there is an overlap region between Gamma & X-Rays, how do we differentiate the two? What are different about them?

submitted by /u/Theroberto9009
[link] [comments]

No comments:

Post a Comment