wrote:
In article ,
wrote:
Sean Houtman wrote:
wrote in news:57e45678-5250-448e-b891-
:
It maybe the case that there are two locomotions driving bulbs
deeper-- one of
contractile roots but a second one of action-reaction of leaves
shooting upwards.
And the factor of the soil involved because if a clay soil is involved
contractile roots
may have a tough time of getting deeper.
It is easier to pull a rope than push it.
This is a wonderfully concise and astute reply. Too bad the recipient
doesn't understand it.
Never studied physics, eh, Sean. Newton would not be calm when
someone calls one of his laws as pushing a rope rather than pulling.
And funny, because, maybe that is what a biologist thinks of when
reading Newton's law of every action has an equal and opposite
reaction, in that you, Sean thinks of a rope being pushed or pulled.
So definitely, biophysics was not one of your talents, Sean.
Here are some experiments for Mr. Plutonium to try:
(1) Stand on the ground and push upwards on the air with your hands. How
far do your feet sink into the ground? Now think about how Newton's
laws are demonstrated by this experiment and how it relates to your
ideas about plant growth.
(2) Crouch down on the ground and slowly stand up. How far do your feet
sink into the ground? Now think about how Newton's laws are demonstrated
by this experiment and how it relates to your ideas about plant growth.
Plants don't really push out of the ground. They stay in place and the
growing structures elongate or add tissue at the growing points at the
ends/edges. Applying equal force to the air and to the ground will move
more air than ground.
Well, it is too bad that neither Sean nor Monique know enough physics
to even discuss it. Newton's third law F_ab_ = -F_ba_.
The fact that both Monique and Sean are able to stand up on a floor
and walk across the floor because the floor itself applies an equal
force
on your weight, and, is not what Sean thinks of as push and pull of a
rope.
The amount of force that a bulb leaf applies to the bulb as it is
growing
out of the ground is an equal and opposite force to the movement of
the
leaf stem. And the speed of growth motion of tulip leaves is a rapid
speed. So both of you,
Monique and Sean, is the time to stop with your blabbering blubbering
and actually repeat the experiment done by Cornell and do it better
and more thorough. Show whether Newton's 3rd law has any role. It
may and may not. But your blabbering opinions is not what is going to
matter.
As I said, the Cornell experiment was not thorough for they used
vermiculate
a very light substance, almost like shredded package styrofoam
consistency.
When they should have tried it in clay soil. And here, it may take 3
or more
years to get the results. It may involve frost in some key role that I
am not
aware of at the moment. I know that frost lifts dense objects like
rocks
to the near surface, but maybe frost has some action that moves bulbs
deeper.
So the Cornell experiment was only a first try experiment, but now we
need
more thorough ones.
I would be surprized if Newton's third law had nothing to do with
bulbs
getting deeper. But you have to do the experiment to find out.
I am filled to the gills in experiment so I won't be repeating the
Cornell one.