*sigh* I miss Az. As a fan of both the desert, and astronomy, I heartily approve this image.
paulburnettsays
chrispollard (#4) wrote: “No but the rib spacing on the cacti surface has evolved to minimize air drag so they don’t get blown over so easily.”
The “ribs” are actually expansion pleats so the cactus can swell up when it’s wet, and then shrink when it’s dry. (The big cetaceans have expansion pleats in their chins, for their lunge-feeding “big gulp.”)
cybercmdrsays
Reading this blog sensitizes you to a lot of the creationist arguments, or at least to what they use for logic. The casual association within the picture makes me think of their inference process.
Cacti point at the heavens. Therefore, they are astronomers.
Your evidence for this claim is what?
You’d better not let Mr. Frothy see this, he might declare it to be .
But do you think astronomers are prickly?
No but the rib spacing on the cacti surface has evolved to minimize air drag so they don’t get blown over so easily.
Very pretty!
Ribbed… for your lack of pleasure!
*sigh* I miss Az. As a fan of both the desert, and astronomy, I heartily approve this image.
chrispollard (#4) wrote: “No but the rib spacing on the cacti surface has evolved to minimize air drag so they don’t get blown over so easily.”
The “ribs” are actually expansion pleats so the cactus can swell up when it’s wet, and then shrink when it’s dry. (The big cetaceans have expansion pleats in their chins, for their lunge-feeding “big gulp.”)
Reading this blog sensitizes you to a lot of the creationist arguments, or at least to what they use for logic. The casual association within the picture makes me think of their inference process.
Cacti point at the heavens. Therefore, they are astronomers.
X happened. Therefore God.
Same process, just as useful.
Enough with this fake Latin!
It’s cactodes! Get it right, you Philistines!
A rope wrapped in a spiral around a larger cable or a “spiral staircase” around a chimney also reduces drag.
…by reducing air turbulence.