[simpleaffiliate source="chitika" results="0"][/simpleaffiliate] Voltage and Ampere for dummies?
Could you explain to me the difference in Voltage and Ampere for electricity, and what does what exactly? I heard that its the Amp that can kill you, not the volts.
But please, no technical mumbo jumbo. Explain it in Layman's terms. I'm a phenomenal idiot, you see...
Voltage is the potential to cause current, to cause something electrical to happen. A 12 volt car battery has 12 volts of potential. Nothing happens unless that battery is connected to something, like a headlight bulb. A 120 volt household outlet has potential, but nothing happens unless you plug something into that outlet and turn it on.
Current is the flow of electrons. When you connect that battery to that headlight bulb, current flows, which causes the light to turn on.
Resistance is the ratio of the two, R = voltage divided by current. If the bulb has 4 ohms of resistance, then the current is I = E/R = 12/4 = 3 amps.
The power used by the bulb is voltage x current, in this case, 12v x 3 amps or 36 watts.
Re shock, it takes 10-20 ma of current (0.020 amp) to cause a shock and possible death. but that current is caused by a voltage, and the higher the voltage, the higher the current, and the higher it hits.
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I've never been one that was afraid or too proud to ask for help. Some things I don't understand and at others I'm all thumbs. That's why I've always kept close friendships with boat mechanics, fishing guides, reel repair people, doctors, scientists and even shrinks
I've wondered for some time what makes Central America so special when it comes to sailfish. Why does the season peak from January through April? Why are the fish so big in Costa Rica and why don't we catch juvenile fish? Where do fish go at the end of the season? Do they go offshore or do they go south or go north?
A few months ago Dr. Nelson Ehrhardt from the University of Miami and scientific advisor to the Central America Billfish Association (CABA) contacted me and asked if I could share my data collected from operating the largest bill fishing resort in Central America for the last 10 years. I gladly agreed and learned he had been doing an extensive study in Mexico and Central America for the last 2 years.
Each meeting with him in San Jose and at the resort I learned a little more about blue water ballerinas. It's amazing how professionals can put all kinds of stuff in perspective and make it so understandable. Dr. Ehrhardt should write "Sailfish for Dummies."
It is the same population of sailfish, "pez vela" as it is known south of the border that traverses the Eastern Tropical Pacific from southern Mexico to Ecuador. It is one of the most condensed sailfish populations in the world. The lifetime of a sail is 10 to 15 years. Most of the juveniles spend their first few years off the coast of Mexico. That doesn't necessarily mean they were born there. For example a west coast Florida tarpon starts its life a hundred miles or so off the beach but spends it's early years in the estuaries. The largest sailfish and the long standing world record of 222 lbs comes from their farthest range to the south in Ecuador.
The Tropical Pacific is really not a very inviting place for sailfish. The low oxygen content in the water will not support sailfish. Two famous currents bring in healthy water. The Humboldt current that flows north from Chile and Peru collides with the California current flowing south from the United States and Mexico off the coast of Central America and forms a "tongue" of current that that supports sailfish. This still only supports sailfish life to a depth of 100 meters or less. Unlike the striped marlin that is caught off Mexico but might spawn off Australia, the Eastern Tropical sailfish's range is limited to the coastal waters of the two currents and the tongue formed off Central America.
Another phenomenon happens each year. Three distinct and powerful winds blow from land to offshore. They start in December or January and blow until March or April.
In Mexico, winds that start in the Gulf of Mexico push across the Tehuantepel lowlands offshore into the Pacific. Likewise the Papagayo winds from Lake Nicaragua push offshore across Nicaragua at the Costa Rican border. Also a Caribbean wind current crosses Panama heading into the Pacific near the Panama Canal.
As the Pacific surface water is pushed offshore the upwelling sends oxygen depleted water to the surface that can not support sailfish. The entire population is forced into pockets of healthy water which happen to in front of windless parts of southern Mexico, Guatamala, Costa Rica and parts of Panama. During this period El Salvador, Nicaragua, and other parts of Panama are nearly void of sailfish. This is the equivalent of taking the entire population of people living on the East Coast of Florida and moving them to Saint Augustine, Vero Beach and Miami for four months out of the year with no-one living in between. Fortunately for the sailfish, their main food source, squid and sardines follow the same pattern.
The reality is there is not a tremendous abundance of fish in these areas but the whole population being forced to share these pockets. In the occurrence of a strong "El Nino," the winds do not blow so the population is not condensed into oxygen healthy pockets caused by the normal upwelling. The surface waters also warm and peak season fishing results in Guatamala and Costa Rica drop dramatically.
Costa Rica has the benefit of two peak seasons. From the Gulf of Nicoya south the peak is January through April. The Guanacaste region to the north begins to peak in May after the winds die and the fish begin to move freely out of prisons formed in Guatamala and southern Costa Rica.
Dr Ehrhardt's studies have shown a strong management plan is needed by all Central American countries working together. Both CABA and The Billfish Foundation, (TBF) as well as local groups are working with Central American governments to form a united effort to conserve the region's sailfish populations.
So now I'm standing on the stern of this boat with a half of chicken's worth of pink dyed feathers and a fly rod in my hand waiting for a ballerina to pop up, mulling over everything I learned about sailfish. If anyone has any advise on how to make a sailfish a dummy, I'm all ears!
About the Author
The Costa Rica Fishing submitting this artiuclet has resume (or C.V) that reads as follows: A trained U.S. lawyer, former Costa Rica charter boat owner and one original founder's of the Costa Rica Classic fishing tournament. He is also bilingual in both English and Spanish. Our Costa Rica fishing expert is also the owner of 5 successful businesses in different fields with offices in the U.S., Costa Rica and Nicaragua and has 20 years experience living in Costa Rica.
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Hi guys, I am looking for a comprehensive book about the universe. The most up to date version out there and I would like it to include information on the history of space, our solar system, other galaxies and stars, info on dark matter and dark energy, black holes, super novas, size, travel distance, ect. I am not a math guy so I am NOT looking for anything technical, more of a layman version, but not something for dummies, more of a college level layman version. Any suggestions would be appreciated. Yep read Brief History of Time, looking for something that is more of a detailed overview of the universe. Thanks anyway.
There's a good text that I use when I teach Astronomy 101 at the local community college -- "The Cosmic Perspective" by Bennett, Donahue, etc. It is now in its 6th edition, but the 5th edition is still good. It covers all you're asking for above with a minimum of mathematics; each chapter can be read on its own; there are some mathematical asides if you want to be adventurous.
I think you can get a 5th edition from online booksellers used for as little as $5.
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[simpleaffiliate source="chitika" results="0"][/simpleaffiliate] Can a battery charger recharge several batteries in parallel at the same time?
I recently got a solar battery charger, that can recharge 4 AAA in 1 to 1.5 hours. It can recharge AAA, AA, C, and D. (the bigger sizes take longer) It is made so that only 4 at a time can go in it, not 1, 2, or 3. It has to be 4. 2 sets of 2 in series. Is it possible that I could get or make dummy batteries, and run wires to more batteries, as long as the sizes and polarities are the same. The idea is that if it can do 4 in 1 to 1.5, then it should be able to do 24 in 6 to 9. I am asking because were I live, the power goes out a few times a year, and it can be out for anywhere from a few hours to a few weeks. I have several battery powered LED lights that take 3 AAA batteries, but batteries go dead after a while, so when the power is out for a week, they need to be recharged.
Your math is good. The 24 batteries in parallel should take about 9 hours to charge (if you were getting 4 to charge in 1.5 hours). There is no danger of overloading anything, because you are "trickle charging" the batteries.
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