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visits member for 1 year, 10 months
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10h
comment Is there any size limit to the amount of information a human (or other) brain can hold
Yes. The brain has finite size. You can't keep an infinite amount of information in a finite space.
22h
answered How do ants sense imminent rainfall?
1d
comment Are there any cases of observed extreme speciation
But I do think Remi.b's comment is responsive to this question. Also you should post a question on Meta so we don't drag this out here.
1d
comment Are there any cases of observed extreme speciation
ID proponents' belief that their questions are valid is not a reason to entertain them here. You are not asking for evidence of speciation, you are asking for "fruit fly to june bug" speciation. You can raise the issue at the Meta site. I don't expect in my lifetime to see fruit flies turning into june bugs.
1d
revised Diffusion of Hypotonic solution into solution with glucose and starch
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1d
comment Diffusion of Hypotonic solution into solution with glucose and starch
@jmusser: Every basic 1-year biology course with lab covers osmosis. There are currently 14 questions dealing directly or indirectly with osmosis on this site. The help center says questions have to be about biology, which this is. A basic grasp of osmosis is crucial to understanding membranes in a biological context.
2d
revised Diffusion of Hypotonic solution into solution with glucose and starch
added 27 characters in body
2d
revised Diffusion of Hypotonic solution into solution with glucose and starch
added 151 characters in body
2d
revised Diffusion of Hypotonic solution into solution with glucose and starch
added 88 characters in body
2d
revised Diffusion of Hypotonic solution into solution with glucose and starch
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2d
comment What is the outcome of a human population starting with only 2 individuals?
@scubadude22: I don't doubt this and you are probably not the only one. But I think the answers to very general evolution questions are available elsewhere and so on balance the site should avoid them. As Remi.b notes, not everyone agrees with me.
2d
answered Diffusion of Hypotonic solution into solution with glucose and starch
2d
comment What is the outcome of a human population starting with only 2 individuals?
@Remi.b: Introductory questions are fine I think. But the low-rep creationist questions are IMO not worth the trouble, notwithstanding your good answers. The questions are not motivated by curiosity but by a desire to convert, which in context strikes me as inappropriate for this or any science forum.
Jul
10
comment What is the outcome of a human population starting with only 2 individuals?
Once again a first-time poster with a "Please help me respond to a creationist" question.
Jul
8
comment Are there any cases of observed extreme speciation
This question seems to involve an attempt to respond to ID rhetoric. Instead of asking a precise but open-minded question OP is asking for an example of something that may not be directly observable. This site wastes too much time (IMO) responding to faux-naif questions from evolution deniers masquerading as open-minded middlemen. There are plenty of these questions in the record and on the net. This is not the forum for them even if the OP is in fact well-intentioned.
Jul
5
comment The distance the electromagnetic field of the heart can be detected
In 2010 there was a brief note in LiveScience on a system developed at U. Sussex which detected heartbeats at 1 meter. That was apparently good 4 years ago.
Jul
5
comment The distance the electromagnetic field of the heart can be detected
The EM field strength falls off as the inverse square of the distance (even in space). The heart operates on mV and mA voltages/currents. I wonder if this is detectable beyond 5 meters using a nearly-ideal detector. 30 feet sounds really far.
Jul
5
comment The distance the electromagnetic field of the heart can be detected
In your first sentence I think you mean "changes with emotions." The E-field falls off as the inverse square of the distance so it loses strength rapidly. There is certainly a range even with an ideal detector.
Jul
4
comment How to adapt an airborne virus to affect only the male population?
Enough detail to persuade the reader you know what you are talking about? But you say in your first sentence you don't know.
Jul
4
comment How to adapt an airborne virus to affect only the male population?
This question appears to be off-topic because it is about writing a novel and only tangentially about biology.