Uploaded by BereanBeacon on Mar 9, 2011
Science Fiction
Directed evolution is a method used in protein engineering to harness the power of natural selection to evolve proteins or RNA with desirable properties not found in nature.
Real Science
Cell signaling is part of a complex system of communication that governs basic cellular activities and coordinates cell actions. The ability of cells to perceive and correctly respond to their microenvironment is the basis of development, tissue repair, and immunity as well as normal tissue homeostasis.
Philippians 4:18
"But I have all, and abound: I am full, having received of Epaphroditus the things [which were sent] from you, an odour of a sweet smell, a sacrifice acceptable, wellpleasing to God."
It's commonly known that many animals are able to detect extraordinarily weak odors. The real mystery is how they can smell scents that are 1,000 times too weak to produce the chemical reactions necessary to make a scent signal.
From the chemist's point of view, our sense of smell shouldn't work as well as it does. When you smelled that wonderful dinner a few days ago, a marvel of chemical reactions was taking place in your nose. Scientists still aren't sure how we sense such a wide range of smells. It was while investigating this question that scientists may have stumbled across the answer to another question.
The receptors in our noses have to detect a certain number of scent molecules before they can trigger the chemical response that makes the signal that tells us we have smelled something. When air is drawn into your nose, an organ called Steno's duct sprays a fine mist. Scientists always thought this mist simply humidified the incoming air. Now they've discovered that the duct also makes proteins that grab onto odor molecules. Sprayed into the incoming air, the proteins collect odor molecules. Then, with their load of odor molecules, they settle onto receptors that trigger your sense of smell. As a result, even scents that are too weak to smell are concentrated by this ingenious system so that we can sense them.
Our sense of smell helps protect us, gives our food flavor, and adds richness to the experience of living. It's truly a marvel of our Creator's design.
Prayer:
I thank You, dear Father in heaven, for the blessings provided though our sense of smell. Help my life to be a sweet-smelling offering to You at all times. In Jesus' Name. Amen.
Notes:
Vaughan, Christopher. 1990. "Molecular odor eaters." Science News, v. 133. p. 348.
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@SimplyThinkDreams The medium it's passing through affects the time interval and they made it very clear that they altered the light path for their experiment. It was not done in a vacuum, it was done from satellite to earth.
TheScienceFoundation 11 months ago
@TheScienceFoundation Yes, that statement was at the end of the article; however, the article was addressing the change in time interval which is a component of velocity, not the medium its passing through. The comparison was between the measurement with between A and B when a clock is at rest compared to a moving clock. When the clock is not at rest, the time interval and distance are increased. we cannot measure the clock of the satellite light is reflected off of, only the earth clock.
SimplyThinkDreams 11 months ago
No one is arguing that you *can't* affect C by changing the medium, rather.
TheScienceFoundation 11 months ago
@SimplyThinkDreams From your article in case you didn't read or understand it;
"If “light path” and “time interval” are changed, then “velocity” will be also changed."
No one is arguing that you can affect the speed of light if you change the medium it's passing through, they even admit they did not use a vacuum in their experiment, that they changed the light path.
TheScienceFoundation 11 months ago
@SimplyThinkDreams Do you have anything actually supporting a variable light speed in a vacuum?
TheScienceFoundation 11 months ago
@TheScienceFoundation Forget it. Many physicists out there know that the velocity of light is not constant and cannot be measured as so. Also, you never bothered to read the article I sent you and instead right away responded by posting an article from 1996, which even admits light does not move at a constant velocity.
SimplyThinkDreams 11 months ago
@SimplyThinkDreams No, definition means definition
>This defines the speed of light in vacuum to be exactly 299,792,458 m/s
TheScienceFoundation 11 months ago
@TheScienceFoundation In this case by definition means an assumption. As velocity changes, so does time which would effect the measurement of the light speed.
SimplyThinkDreams 11 months ago
@SimplyThinkDreams The speed of light is constant in a vacuum, by definition.
phys.ncku.edu.tw/mirrors/physicsfaq/Relativity/SpeedOfLight/speed_of_light.html
TheScienceFoundation 11 months ago
@TheScienceFoundation First off, the speed of light is variable and not a constant as it is was assumed to be by Einstein. If velocity = light path/time interval and either light path or interval change, the velocity of light also changes. wbabin(.)net/feast/cuong27.pdf
SimplyThinkDreams 11 months ago