How long can a propane tank run a small refrigerator made to run on propane gas?
I am starting to put together some supplies in my home in case of an emergency. Canned food, fresh water, etc. One of the biggest obstacles I'm running into is how to keep my wife's insulin cold. She is a type 1 diabetic, and without insulin, she dies. Plain and simple. She can get by for a little while on what she has at room temperature or slightly below, but anything over 30 days, and we start running into problems. The insulin supply she has will go bad much faster if not kept cold. So I am looking into getting a very small RV style refrigerator which can run on propane gas, along with several spare propane tanks. Has anyone used one of these gas powered refrigerators before? If so, will it run COMPLETELY on gas? I want to be prepared for anything, including society collapse where we have no power at all for an extended period of time. Also, how long will the refrigerator run on a standard size propane tank (the size you'd use for a gas grill)? Please only post an answer if you're pretty certain its accurate. Someone's life is literally at stake.
What are some of the good projects that can be done using Verilog?
I have a few ideas but they depend on your experience and comfort level with Verilog and ASIC tools in general:1. 4-port switch/router (you may use 1GE MACs)2. Bitcoin accelerator3. Multi-core CPU (using ARM, MIPS, or ARC cores)4. Hardware accelerator for anti-virus (RegEx Scanner Engine)5. Hardware Lossless Compression engine6. Hardware Accelerometer for capturing data from a tennis racket, baseball bat7. Flash storage cache / accelerator8. Qubit (quantum cryptography) processor9. Encryption/Decryption engine for SHA1/SHA-25610. GPS filter (baseband) for processing GPS data from an antenna
VLSI: What are good ways to learn to get better at digital design?
Digital Design is all about how much you can think and apply logic to digital problems. So practice in that direction can make you a very good digital design engineer.Before one start worrying about gaining good command over digital design, one should first evaluate how much we are good at digital concepts and it’s applications. Following questions may help figuring out the sameAm I able to recognize the digital design problem correctly as pure combinatal design or sequential design? -Exercise questions in standard books and several digital design interview questions can guide you.Can you design a circuit that stores ‘1′ ? Irrespective of your input, output should be ‘1’ . Do not use a latch.Am I able to draw timing diagrams for all basic sequential circuits ?Am I able to think about control logic to reconfigure a modulo 8 counter into modulo 5 counter? Try such questions from wherever you can get.Am I able to design a 4k*32 memory using 1k*16 memory? Is my decoding logic scalable ?Can I design a circuit with pipe-lining? Take example of 64-bit additionIf you are not able to complete these with full understanding, your basics are not good. You should first work on them.If you are seriously good at them, start learning Verilog or VHDL. Your next goal should be application of digital design concepts, which requires exposure of EDA tools and Design and Verification Languages and Methodologies. This can take you to a point where you can start designing simple digital problems like arbiter, router, UART, FIFOs etc.And most of the advanced concepts in digital design are not compiled in any single book, but one can start looking for following topics in internet.Resets - Synchronous and AsynchronousClock domain crossingSynchronizersFIFOs - concept and applicationMemory controller design...
A Fitness Question?
I don't know about the whey protein but I own a Total Gym as well. Watch the John Carleo 6-8 minute workout video if you can for good exercises. Some suggestions: Chest flys (low medium and high) the Chuck Norris (lay on board and bring your arms straight over your head) Tricept extensions angel (or iron cross) Waist twist (good for obliques and shoulders)
Christians, why don't Atheist realize their is 10^40000 chance of evolution occurring?
"Sir Fred Hoyle a mathematician and astronomer calculated that the probability of one simple enzyme forming by chance is 10 to the power of 20 (one with twenty zeros behind it), to 1. Hence for one cell to form, about 2000 enzymes are needed, which makes the probability of the first self replicating cell forming by random movement of atoms as 10 to the power of 40000 to 1. One bitter critic of Hoyle begrudgingly says that that this figure is 'probably not overly exaggerated'. It has been said that this is as likely as a cyclone going through a junkyard and producing a fully functional jumbo jet. People do say that if you allow enough time, anything can happen. However, at best we have about 4.6 billion years to work with. If Sir Fred Hoyle's calculated probability was for a cell to form in say the next second then the probability of a cell forming in 4.6 billion years is still about 10 to the power of 39982 to 1. If it was for a microsecond, the probability would be 10 to the power of 39976 to 1. If it was for a picosecond, the probability would be 10 to the power of 39970 to 1. There are approximately 10 to the power of 80 atoms in this universe. It is also claimed that life came from another planet. Nobel Prize winner Francis Crick recognised the problem of the extremely low probability that life could come from non-life on earth. He concluded that the earth was not old enough, and postulated that life may have come from another planet. Hence in order for us then to have a 1000 to 1 chance of life forming by itself, (and lets assume that an asteroid will definitely take the life to earth) there would need to be roughly 10 to the power of 38970 planets out there (fairly close to us) capable of supporting life. But are Fred Hoyles calculation's correct? It would be dangerous just to assume that his calculations were. A more recent claim details that biogenesis (the formation of life from non-life) is not reliant on the random movement of atoms, but is a natural process, just as hydrogen and oxygen atoms naturally attract to form water. But, if this is the case, what are the chances of the 'Big Bang' producing the atoms that would behave in such a fashion that they would naturally form amino acids and proteins, which in turn would naturally come together to form life?"