Showing posts with label light. Show all posts
Showing posts with label light. Show all posts

Friday, June 25, 2021

This little light of mine | I'm gonna let it shine


What a lovely and powerful illustration of the deep, deep, depths under the seas, about which we know very little!

That image accompanied this essay by Elizabeth Kolbert, who writes: "We’ve barely explored the darkest realm of the ocean. With rare-metal mining on the rise, we’re already destroying it."

One of those awesome mysteries lies way down where the sun don't shine, as they say:

Only the top layers of the oceans are illuminated. The “sunlight zone” extends down about seven hundred feet, the “twilight zone” down another twenty-six hundred feet. Below that—in the “midnight zone,” the “abyssal zone,” and the “hadal zone”—there’s only blackness, and the light created by life itself.

Hadal zone.  I had never heard about this, until I read the essay.

In this zone, the only light is the light created by life.  Yes, created by life.

Bioluminescent creatures produce light via chemical reaction. They synthesize luciferins, compounds that, in the presence of certain enzymes, known as luciferases, oxidize and give off photons. ... In the case of bioluminescence, different groups of organisms produce very different luciferins, meaning that each has invented its own way to shine.

We have barely understood anything that deep down, but we know enough that there are precious and rare metals.  So, who cares for life in its variety and complexity, eh!  “Even if we found unicorns living on the seafloor, I don’t think that would necessarily stop mining.”

Such is our human behavior!

A later issue of The New Yorker includes a poem titled Bioluminescence.  Why the editors failed to pair it in the same issue that had Kolbert's essay is beyond me.  At least in my post, I can present them together.

Here is the poem Bioluminescence, by Paul Tran:

There’s a dark so deep beneath the sea the creatures beget their own
light. This feat, this fact of adaptation, I could say, is beautiful

though the creatures are hideous. Lanternfish. Hatchetfish. Viperfish.
I, not unlike them, forfeited beauty to glimpse the world hidden

by eternal darkness. I subsisted on falling matter, unaware
from where or why matter fell, and on weaker creatures beguiled

by my luminosity. My hideous face opening, suddenly, to take them
into a darkness darker and more eternal than this underworld

underwater. I swam and swam toward nowhere and nothing.
I, after so much isolation, so much indifference, kept going

even if going meant only waiting, hovering in place. So far below, so far
away from the rest of life, the terrestrial made possible by and thereby

dependent upon light, I did what I had to do. I stalked. I killed.
I wanted to feel in my body my body at work, working to stay

alive. I swam. I kept going. I waited. I found myself without meaning
to, without contriving meaning at the time, in time, in the company

of creatures who, hideous like me, had to be their own illumination.
Their own god. Their own genesis. Often we feuded. Often we fused

like anglerfish. Blood to blood. Desire to desire. We were wild. Bewildered.
Beautiful in our wilderness and wildness. In the most extreme conditions

we proved that life can exist. I exist. I am my life, I thought, approaching
at last the bottom of the sea. It wasn’t the bottom. It wasn’t the sea.

Tuesday, January 26, 2016

American solution to an American problem

A few weeks after I came to this country for graduate studies, it was nearing Thanksgiving and the television ad for Alka-Seltzer that I watched then is what I refer to as American solutions to American problems.

What was the ad about?

In this ad, the audio commentary and the pictures presented all the wonderful foods that the viewer ended up eating at Thanksgiving, which then resulted in stomach aches and heartburn. And, presto, Alka-Seltzer to the rescue!

While watching the commercial, my reflexive thought was simple: if the problems came from overeating, then why not simply advise the viewer to eat less?

Of course, as I have come to realize, to consume less is not American.  Instead, the American way is to consume more, and then when problems develop savvy entrepreneurs provide solutions to facilitate further consumption.

Today's exhibit along those lines?  Apparently more and more people have trouble falling asleep in this consumer capital of the world.  No, it is not from food, though certainly contributes its own problems.  This sleep hassle is thanks to the gazillion electronic gadgets that seemingly surround us every minute of the day and on which our eyes are fixated.  From television screens to smartphones, screens of all types.  What's the link?  It is from the blue part of the spectrum:
Blue wavelengths—which are beneficial during daylight hours because they boost attention, reaction times, and mood—seem to be the most disruptive at night. And the proliferation of electronics with screens, as well as energy-efficient lighting, is increasing our exposure to blue wavelengths, especially after sundown.
You want more detail?
Recent studies have shown that short-wavelength [blue] light has a greater effect on phase shifting the circadian clock and on melatonin suppression. In 2014 my colleagues and I examined the effects of reading on a light-emitting device compared with reading a printed book. Participants who read on light-emitting devices took longer to fall asleep, had less REM sleep [the phase when we dream] and had higher alertness before bedtime [than those people who read printed books]. We also found that after an eight-hour sleep episode, those who read on the light-emitting device were sleepier and took longer to wake up. In the study all participants had to stop reading and turn off the lights at exactly 10 P.M., even if they did not feel sleepy. At home, I would expect people do not have the motivation to turn off their devices and go to bed, so they would stay up longer and experience even more circadian delay and shorter sleep times. The effects in the real world could actually be even greater.
Got it?  Let's recap.  Light influences our sleep pattern.  Especially the blue light.  As animals, normally we would begin to prepare for sleep after sundown.  But, on top of the lights all around, there is the blue wavelength from the gadgets that end up screwing up our sleep (and the internal clock that influences the working of organs in our bodies.)

The solution would be simple, right?  No gadgets into the night hours.  Especially when there is no ambient lighting, as in looking at the glowing screen in a dark room.  But, nope, it is un-American to propose such solutions and, worse, to implement it.

Hence, an American solution to an American problem:
Along with various other health-focused apps, the new version of Apple's mobile operating system, iOS 9.3, will include the Night Shift feature. This app will use the device's clock and geolocation to determine what time the sun sets and will automatically shift the phone's display color to the warmer, or redder, end of the light spectrum until the following morning.
This is merely.the latest in the consumption culture.  Do not even dare to suggest that we put those devices down; to borrow from Charlton "NRA" Heston, people'll give their screens when you pry them from their cold, dead hands ;)