Store Is Closed
Gravity has a profound effect on human perception. Our concept of up and down, above and below, and all related perceptions are rooted in earth’s gravitational pull.
We associate negative emotions and states of being as sinking or falling. We associate positive states of emotion as rising. To fall is to lose potential energy, to stagnate at the bottom. To rise is to gain potential energy, to overcome the constant force that pulls us down. Even heaven is in the sky, while hell is beneath us.
The very construct of our consciousness is rooted in gravitational influences. It begs the question, how would the human mind be effected if all it ever knew was a weightless environment, with all planes being equally arbitrary?
In the following article, I explore the effects of aperture, exposure, ISO, flash, and camera motion on night photography. By utilizing some straightforward tricks, one can accomplish many interesting effects.
I wrote the following article as a guide for nighttime photography equipment. While I have upgraded my own equipment over the years, a simple consumer grade camera and tripod can open up the door to new opportunities. I suggest referencing the article as something to aim for, not an absolute requirement.
The AquaClear 50 powerhead is an aquarium pump designed to improve circulation, aerate water, and with the filter cartridge accessory, polish water.
I find it works best to polish water when cleaning the tank. The filter picks up all the debris that gets churned around when vacuuming the gravel.
As my African cichlids tripled in size, my Tetra FS 30-60 power filter lacked the filtration capacity for my 55 gallon aquarium. Three died from disease related to inadequate filtration. As a result, I upgraded to a Fluval 305 External canister Filter.
The change has been dramatic. The water is now crystal clear and the cichlids are much less prone to disease. I highly recommend the Fluval 305 for 55 gallon tanks, or any related product line for tanks up to 100 gallons or more.
I found an ideal combination of wafers, flakes, and pellets to feed my African cichlids. I outline the feeding regiment here
The short of it is this:
Breakfast: Hikari Algae Wafers: $6.57 (2.89oz)
Once a week treat: brine shrimp or bloodworm.
Jul 30 2011 7:07:39 pm ESTTopics:
From the Genetics Science Learning Center at the University of Utah, I found this excellent Flash animation that displays a scaled representation of various organisms, bacteria, viruses, and molecules down to a carbon atom.
The animation helps put in perspective the size of the systems responsible for life. In particular, I am surprised by the size of viruses, and can appreciate the difficulty in detecting them.
Jul 25 2011 5:00:00 pm ESTTopics:
D’Arcy Wentworth Thompson notes that there is a tendency in all organisms for bodily surface to keep pace with volume.
Multicellular organisms, like unicellular organisms, require a constant supply of nutrients and various gasses. A unicellular organism may absorb the various nutrients and respiratory gases directly from their surrounding environment. However, as the sheer quantity of cells increases in an organism, the distance between the environment and the cells increases, and various organ systems are required to transport nutrients and gasses.
The circulatory system utilizes fractal branching structures to maximize surface area for distribution of these gases and nutrients. Air sacs and alveoli greatly increase the respiratory surface of the lung. The long tract of the intestine is itself lined with small villi to maximize nutrient absorption. These systems each utilize some method to increase surface area to keep pace with volume. Consider the following passage from “On G
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