Cumulative General Science/Technology Quiz
- Thread starter Catharsis
- Start date
- Status
The answer that I was looking for the second part was that the order that the Hox genes are on the DNA corresponds to where they are expressed in the anterior-posterior axis.
Hox genes define boundaries in animals. Mutants can cause a change in what each segment becomes. For example, in Drosophila, ultrabithorax has 2 sets of wings instead of one, and antennapedia has legs instead of antennae. Pretty nifty, eh?
peter grimes is up next.
Hox genes define boundaries in animals. Mutants can cause a change in what each segment becomes. For example, in Drosophila, ultrabithorax has 2 sets of wings instead of one, and antennapedia has legs instead of antennae. Pretty nifty, eh?
peter grimes is up next.
This is stolen from a Car-Talk puzzler. I never heard the answer(s), but I'm fairly confident in the one I came up with:
The Moon's force of gravity is 1/6th that of Earth's. So if I weigh 100kg here, I'd only weigh 17kg on the moon. What actually would weigh more on the moon than it does here on Earth?
The Moon's force of gravity is 1/6th that of Earth's. So if I weigh 100kg here, I'd only weigh 17kg on the moon. What actually would weigh more on the moon than it does here on Earth?
Mise
isle of lucy
Something more massive than the Earth itself?
Is this a trick question?
A helium balloon would certainly register more on a set of scales on the Moon than on Earth.
[nitpick]Also kg is not a unit of weight[/nitpick]
A helium balloon would certainly register more on a set of scales on the Moon than on Earth.
[nitpick]Also kg is not a unit of weight[/nitpick]
Mise
isle of lucy
Cunning.....!
Perfection
The Great Head.
Actually, ainy if something weighs kilograms, then it probably spans liters, and has a lifespan of Hertz. 
- Joined
- Oct 5, 2001
- Messages
- 30,080
...Which is kind-of my point.Actually, ainy if something weighs kilograms, then it probably spans liters, and has a lifespan of Hertz.
I just don't see too many bathroom scales measuring Newtons.
Perfection
The Great Head.
I was stating it in a sillier less subtle way.
Okay - I guess I should have left off the units... 
a Helium Balloon is indeed the answer I had in mind. I was really curious to see if there would be any other possible answers!
Truronian has the floor
a Helium Balloon is indeed the answer I had in mind. I was really curious to see if there would be any other possible answers!
Truronian has the floor
Q:
What is the Moho and when will we get there?
What is the Moho and when will we get there?
Perfection
The Great Head.
In the borehole pressure mines 100km beneath Planetsurface, at the Mohorovicic Discontinuity where crust gives way to mantle, temperatures often reach levels well in excess of 1000 degrees Celsius. Exploitation of Planet's resources under such brutal conditions has required quantum advances in robotic and teleoperational technology.
Morgan Industries, Ltd.
"Annual Report"
"Annual Report"
I will accept that in lieu of a more encompassing answer because SMAX is awesome.
Perfection is up.
Perfection is up.
Perfection
The Great Head.
OPEN FLOOR
LAnkou
Breizh A Tao
Give a simple example of how cartesian geometry can't describe the universe. It must involve triangle, sum of it's angles and a sphere...
Catharsis
catch u on the flip scythe
A triangle on a sphere could have three right angles. For example: you're at the North Pole. You travel one mile south, then one mile east, and finally one mile north, ending up back where you started. So, you've travelled for three straight lines, but because you made a 90 degree turn each time, the sum of the angles is 270 degrees. (Actually, the one at the north pole might not be 90 degrees, but the sum would be more than 180.)
Is that what you wanted?
Is that what you wanted?
Probably but that's only because of the 3D nature of a sphere, it's hardly particularly surprising. That said it's obviously true so I can't see why that would be wrong.
I can give you an example without triangles per se, I could do you a spherical object, the curvature of space time and gravitational account incorporating motion and gravity into the theory, with a triangular trajectory.
Quantum theory and gravity. 
I can give you an example without triangles per se, I could do you a spherical object, the curvature of space time and gravitational account incorporating motion and gravity into the theory, with a triangular trajectory.
Quantum theory and gravity.
LAnkou
Breizh A Tao
Catharsis is up...
Sidhe, I was asking about euclidian geometry (which is Geometry of plan, at least, it's how we explain it in school here in France) and a simple example.
Curvature of space time and gravitational account incorpating motion and gravity into the theory is not a simple exemple.
even simpler than catharsis: Take an orange (a sphere), cut it in halves, then in quarter, finally in 1/8. Take the skin of 1/8 off. It's a triangle with 3 right angles.
Sidhe, I was asking about euclidian geometry (which is Geometry of plan, at least, it's how we explain it in school here in France) and a simple example.
Curvature of space time and gravitational account incorpating motion and gravity into the theory is not a simple exemple.
even simpler than catharsis: Take an orange (a sphere), cut it in halves, then in quarter, finally in 1/8. Take the skin of 1/8 off. It's a triangle with 3 right angles.
- Status
Similar threads
