Energy Explained Simply

Energy, it is fair to say, is a very vague concept. So where does one go to learn more? Does one have to take a physics course? I don’t think so, and to test my theory, I have tried to explain energy as briefly as I can, right here.Energy 101Energy is what makes the world go round. Literally. Every neuron that sparks in your brain, every electron that fires down a wire, every molecule burning in a fire, carries with it a sort of momentum that it passes on like a baton in a complex relay race. The batons are flooding in all directions all around us and across the universe – they are energy and we have learned how to harness them.The actual word “Energy” is a much abused term nowadays – because energy is used to represent such a disparate range of phenomena from heat to light to speed to weight, and because it seems to be able to change forms so readily, it is cannon fodder for pseudo-scientific and spiritual interpretation. However, you will be pleased to hear that it actually has a very clear (and consistent) nature.I like to think of energy being a bit like money – it is a sort of currency that can be traded. It takes on various forms (dollars/pounds/Swiss francs) and can be eventually cashed in to achieve something. However, just like money, once spent, it does not vanish. It simply moves on a new chapter in its life and may be reused indefinitely.To illustrate the point, let’s follow a ‘unit of energy’ through a visit to planet Earth to see what I mean. The [number] shows every time it changes currency (see the key below).The energy in our story starts off tied up in hydrogen atoms in the sun [1]. Suddenly, due to the immense pressure and heat, the nuclei of several atoms react to form a brand new helium atom, and a burst of radiation[2] is released. The radiation smashes into other nearby atoms heating them up so hot [4] that they glow, sending light [2] off into space. Several minutes pass in silence before the light bursts through the atmosphere and plunges down to the rainforest hitting a leaf. In the leaf the burst of power smashes a molecule of carbon dioxide and helps free the carbon to make food for the plant [3]. The plant may be eaten (giving food ‘Calories’), or may fall to the ground and settle and age for millions of years turning perhaps to coal. That coal may be dug up and burned to give heat [4] in a power station, boiling water to supply compressed steam [5] that may drive a turbine [6] which may be used to generate electricity [7] which we may then use in our homes to heat/light/move/cook or perhaps to recharge our mobile phone [3]. That energy will then be used to transmit microwaves when you make a call [2] which will mostly dissipate into the environment heating it (very) slightly [4]. Eventually the warmed earth radiates [2] this excess of heat off into the void where perhaps it will have another life…Energy currencies:[1] Matter is energy, according the Einstein, and the quantity relates to mass according to E=mc^2 (c is a constant equal to the speed of light).[2] Radiation (like sunlight) is a flow of energy, and energy content relates the frequency according to E=hf (h is the Planck constant).[3] Chemical energy – the most complex energy, a mixture of different tensions in nuclear and electromagnetic force fields.[4] Thermal (heat) energy- this is really just a sneaky form of kinetic energy [6 below] – small particles moving and vibrating fast are sensed by us as heat.[5] Compression (or tension) energy – while compressed air is again a sneaky form of kinetic energy[6], a compressed spring is different – it’s energy is more like chemical energy and is stored by creating tension in the force fields present in nature (gravity, electromagnetism and nuclear forces).

[6] Kinetic energy – is energy by virtue of movement (like a speeding bullet or unstoppable train)[7] Electrical energy – this energy, like a compressed spring, is stored as stress in force fields, in this case electromagnetic force-fields.This short story is testament to an enormous quantity of learning by our species, but there are some clear exclusions to be read into the story: Energy fields (auras) or the energy lines in the body that conduct the “chi” (or life force) of Asian medical tradition
Energy lines on the Earth (aka Ley lines)
Negative or positive energy (as in positive or negative “vibes”)These energy currencies relate to theories and beliefs that science has been unable to verify and thus they have no known “exchange rate”. Asking how many light bulbs can you power with your Chi is thus a nonsensical question, whereas it would not be for any scientifically supported form of energy. And since energy flows account for all actions in the universe, not being exchangeable would be rather limiting.Where exactly is Energy kept?This may sound like s strange question, we know Energy is kept in batteries, petrol tanks and chocolate chip cookies. But the question is, where exactly is it stored in those things?Energy is stored in several ways:as movement – any mass moving has energy by virtue of the movement, which is called Kinetic Energy
as matter – Einstein figured out that matter is just a form of energy, and the exchange rate is amazing – 1g = 90,000,000,000,000,000 joules (from E=mc^2)
as tension in force fieldsThat last one sounds a bit cryptic, but actually most of the energy we use is in this form – petrol, food, batteries and even a raised hammer all store energy in what are essentially compressed (or stretched springs).What is a force field? Why on earth did I have to bring that up?All of space (even the interstellar vacuum) is permeated by force fields. The one we all know best is gravity – we know that if we lift a weight, we have to exert effort and that effort is then stored in that weight and can be recovered later by dropping it on your foot.Gravity is only one of several force fields known to science. Magnetic fields are very similar – it takes energy to pull a magnet off the fridge, and so it is actually an energy store when kept away from the fridge.The next force field is that created by electric charge (the electric field). For many years this was though to be a field all on its own but a chap called James Clerk Maxwell realised that electric fields and magnetic fields are in some senses two sides of the same coin, so physicists now talk of ‘electromagnetic’ fields. It turns out that electric energy (such as that stored in a capacitor) consists of tensions in this field, much like a raised weight is a tension in a gravity field. Perhaps surprisingly, light (as well as radio waves, microwaves and x-rays) are also energy stored in fluctuations of an energy field.Much chemical energy is also stored in electric fields – for example, most atoms consist of positively charged nuclei and negatively charged electrons, and the further apart they are kept, the more energy they hold, just liked raised weights. As an electron is allowed to get closer to the nucleus, energy is released (generally as radiation, such as light – thus hot things glow).The least well known force field is the strong ‘nuclear’ force. This is the forces that holds the subatomic particles (protons) together in the nucleus of atoms. Since the protons are all positively charged, they should want to repel each other, but something is keeping them at bay, and so physicists have inferred this force field must exist. It turns out their theory holds water, because if you can drag these protons a little bit apart, they will suddenly fly off with gusto. The strong nuclear force turns out to be bloody strong, but only works over a tiny distance. It rarely affects us as we rarely store energy with this energy field.Now we understand force fields we can look at how molecules (petrol, oxygen, chocolate) store energy. All molecules are made of atoms connected to one other via various ‘bonds’ and these bonds are like springs. Different types of molecules have different amount of tension in these bonds – it turns out coal molecules, created millions of years ago with energy from the sun, are crammed full of tense bonds that are dying to re-arrange to more relaxed configurations, which is exactly what happens when we apply oxygen and the little heat to start the reaction.The complexity of the tensions in molecules are perhaps the most amazing in nature, as it is their re-arrangements that fuel life as we know it.What exactly is Heat then?You may have noticed that I did not include heat as a form of energy store above. But surely hot things are an energy store?Yes, they are, but heat is actually just a sort of illusion. We use heat as a catch all term to describe the kinetic energy of the molecules and atoms. If you have a bottle of air, the temperature of the air is a direct consequence of the average speed of the molecules of gas jetting around bashing into one another.As you heat the air, you are actually just increasing the speed of particles. If you compress the air, you may not increase their speed, but you will have more particles in the same volume, which also ‘feels’ hotter.Solids are a little different – the atoms and molecules in solids do not have the freedom to fly around, so instead, they vibrate. It is like each molecule is constrained by elastic bands pulling in all directions. If the molecule is still, it is cold, but if it is bouncing around like a pinball, then it has kinetic energy, and feels hotter.You can see from this viewpoint, that to talk of the temperature of an atom, or of a vacuum, is meaningless, because temperature is a macroscopic property of matter. On the other hand, you could technically argue that a flying bullet is red hot because it has so much kinetic energy…Is Energy Reusable?We as a species, have learned how to tap into flows of energy to get them to do our bidding. So big question: Will we use it all up?Scientists have found that energy is pretty much indestructible – it is never “used-up”, it merely flows from one form into another. The problem is thus not that we will run out, but that we might foolishly convert it all into some unusable form.Electricity is an example of really useful energy – we have machines that convert electricity into almost anything, whereas heat is only useful if you are cold, and light is only useful if you are in the dark.Engineers also talk about the quality (or grade) of energy. An engineer would always prefer 1 litre of water 70 degrees warmer than room temperature, than 70 litres of water 1 degree warmer, even though these contain roughly the same embodied energy. You can use the hot water to boil an egg, or make tea, or you could mix it with 69 litres of room temperature water to heat it all by 1 degree. It is more flexible.Unfortunately, most of the machines we use, turn good energy (electricity, petrol, light) into bad energy (usually “low grade heat”).Why is low grade heat so bad? It turns out we have no decent machine to convert low grade heat into other forms of energy. In fact we cannot technically convert any forms of heat into energy unless we have something cold to hand which we are also willing to warm up; our machines can thus only extract energy by using hot an cold things together. A steam engine relies just as much on the environment that cools and condenses water vapour as it does on the coal its belly. Power stations rely on their cooling towers as much as their furnaces. It turns out that all our heat machines are stuck in this trap.

So, in summary, heat itself is not useful – it is temperature differences that we know how to harness, and the bigger the better.This picture of energy lets us think differently about how we interact with energy. We have learned a few key facts:Energy is not destroyed, and cannot be totally used up – this should give us hope
Energy is harnessed to do our dirty work, but tends to end up stuck in some ‘hard to use’ formSo all we need to do to save ourselves is:Re-use the same energy over and over
by finding some way to extract energy from low grade heatAlas, this is a harder nut to crack than fission power, so I am not holding my breath. It turns out that there is another annoying universal law (the Second Law of Thermodynamics) that says that every time energy flows, it will somehow become less useful, like water running downhill. This is because energy can only flow one way: from something hot to something cold – thus once something hot and something cold meet and the temperature evens out, you have forever lost the useful energy you had.It is as if we had a mountain range and were using avalanches to drive our engines. Not only will our mountains get shorter over time but our valleys will fill up too, and soon we will live on a flat plane and our engines will be silent.The Big PictureSo the useful energy in the universe is being used up. Should we worry?Yes and no.Yes, you should worry because locally we are running out of easy sources of energy and will now have to start using sustainable ones. If we do not ramp up fast enough we will have catastrophic shortages.No, should should no worry that we will run out, because there are sustainable sources – the sun pumps out so much more than we use, it is virtually limitless.Oh, and yes again – because burning everything is messing up the chemistry of the atmosphere, which is also likely to cause catastrophe. Good news is that the solution to this is the same – most renewable energy sources do not have this unhappy side effect.Oh, and in the really long term, yes we should worry again. All the energy in the universe will eventually convert to heat, and the heat will probably spread evenly throughout the universe, and even though all the energy will still be present and accounted for, it would be impossible to use and the universe would basically stop. Pretty dismal, but this is what many physicists believe: we all exist in the eddy currents of heat flows as the universe gradually heads for a luke-warm, and dead, equilibrium.=============If you liked this article, you might like my series on efficient motoring.

Developing Original Humor for Your Talk

Most humor in the business setting is unplanned. It just happens. Spontaneous events with clients and co-workers create the surprises and uncomfortable situations which call for humor as a coping tool.We all have differing abilities to recognize, appreciate and create humor. How’s your HQ (humor quotient)? Do you work with people who are full of wit?Regardless of where you are now, you can increase your humor skills. When you study humor, it’s obvious there’s more to it than just spontaneous laughs. There are times when you may want to deliberately use humor, maybe even plan it in advance.Perhaps you want to spice up a training session or a planning meeting. Maybe you want to lighten up a sales presentation. You can learn ways to administer a dose of laughter to help you connect and communicate.There are three elements which can help you understand and structure your humor: surprise, tension and relationships.
First, humor is based on the element of surprise. Humor often comes from something as simple as someone saying the unexpected. The surprise twist creates the humor.Because of the element of surprise, when we are deliberately structuring a piece of humor (perhaps for a speech) we don’t want to telegraph the joke. A line like, “a funny thing happened to me on the way over here,” signals your listeners that a joke is coming. This will lessen the element of surprise.To enhance the surprise, it’s best to place the punch line at the end of the joke. And within the punch line, the punch word is usually given last. The punch word is the word that makes the humor work. It’s the trigger that releases the surprise.If your humor falls flat, do what professional humorists do. Pretend you are serious. Since the listeners didn’t realize you were making a joke, you never need to apologize or explain it. Turn your surprise into a secret.

It’s no surprise to people who work in pressure-packed work environments that humor is also based on this second principle: release of tension. Laughter is a pressure valve which releases muscle tension. Uncomfortable situations, fear and pain are all tension builders that cry out for humor. We find ourselves laughing at risqué humor and embarrassing situations because they make us uncomfortable. We release the tension they create with humor.People who intentionally and frequently use humor know tension can be used deliberately to heighten the impact of the humor. A pause placed just before the punch line or the punch word builds a sense of anticipation, a form of tension, which makes the joke stronger.In most jobs, daily challenges give you the opportunity to purposely use tension in setting up your humor. Simply by sharing a real life humorous situation, you can recreate the spontaneous circumstances which generated the laughter in the first place. Although there’s nothing like “being there,” you can improve on the actual event by embellishing to create a little more tension in the set up. You can structure the punch line for maximum effect by putting the punch word last. And you can pause to add impact.As we plan our humor, we also notice that the third principle of humor is relationships. Most humor is based on how things are related and not related. We can create humorous twists when we play with relationships.Gary Larson’s Far Side cartoons are well known for twisting relationships. One of his frequent tools is giving animals human characteristics. For example, the cartoon shows a car driving down the road. Driving the car is a bull. Sitting next to the bull is a cow. And in the back seat is a calf. They’re driving past a field with humans standing in the pasture. The picture, by itself, creates a funny picture by twisting the normally expected relationships. The calf sticks his head out of the car window and says “Yakity, Yakity, Yak!”Understanding the principle of relationships, you are able to create your own, original humor. You can create “shopping lists” from which you search for humorous connections.Let’s say you had an idea for building some humor. We’ll call this idea a seed from which the humor can grow. Perhaps, on a difficult shift at a hospital, someone made a comment that working in a hospital was like working in a war zone. This is the starting point for developing some humor.You’ll begin by creating two “shopping lists.” On one list you’ll put “hospital things.” And on the other, you’ll list “military things.” It will work better if you choose “military” rather than “war zone” because it’s a broader category which will give you more options when looking for relationships.Your first step is to brainstorm by making the lists as long a possible. The more items you have on each list, the more likely you’ll be able to make some humorous connections.As you make your lists, you’ll look for opportunities to branch out and create sublists to multiply your chances of finding humor. For example, if the idea “basic training” comes to mind, your sublist should contain everything you can think of relating to basic training: drill sergeants, marching, inspections.The next step is to search for connections between your two lists which might lead you to humor. Play with it. Then set it aside and come back to it later. Once you find something with humorous possibilities, you’ll massage it to maximize the humor impact.

To see what this exercise might produce:”Why a Hospital is Like the Military.”1. In the military, soldiers take orders from people with silver and gold on their shoulders. In a hospital, nurses take orders from people with silver and gold in their wallets.2. When discharged from the hospital after a Lower GI Series, you get the GI bill.3.,Nurses, like soldiers, see a lot of privates.4.mWhen filling out a hospital shift report, you sometimes resort to the policy of “Don’t ask, don’t tell.”5. Nurse training is like boot camp. Never before had you seen so many bald body parts.6. In the military, a fatigue is what you wear. In nursing, it’s what wears on you.7. Soldiers get combat pay. Nurses don’t…but should.Whether you’re creating a list or a slogan to go on a poster, looking for a monologue to open a speech or training session, or just searching for one joke to make a point, you can use these lists to create your humor. It works.These three principles of humor are illustrated by the classic slip on the banana peel. The slapstick spill illustrates surprise because we weren’t expecting someone to fall. We also experience tension. When we see someone get hurt we get startled, and react with tension. It also twists relationships. Seeing a distinguished person sitting on the sidewalk is something our of the ordinary. Surprise, tension, relationships…we laugh!Natural, spontaneous humor is one of your greatest tools for coping with stress as you work. By understanding what makes the humor tick, you can become better at planning and deliberately using this powerful adjunct to your success arsenal.

Injury Measures

Injuries are the most unexpected visitors since the time of human creation.

They come when one least expects it to. While some injuries are curable and done so pretty quickly, some injuries take a long time to recover and at times don’t recover at all.

Nevertheless injuries are always painful and one must be very careful and responsible while dealing with them as the tiniest of carelessness can aggravate the injury and cause more danger.

There are plethoras of ways that can be used for curing these injuries. Some remedies are completely based on medication whereas some depend on the will power you possess to get better and get back on your feet.

Here are a few motivational and helpful techniques which might sound useful for you in case you meet with an uncalled accident.

1. Patience is the key

Yea injuries can get you really restless. You might not have the slightest bit of trying to do in order to get healed and then jump into the bandwagon of endless activities. But that would just delay the entire process of healing and take a much longer to recover thus delaying your getting back to your everyday routine way more late. Not waiting to get recovered completely and getting into activities might even cause the injury to develop further complications and have a bitter outcome. Thus patience is the key. Being patient and calm will help you have a peace of mind and you won’t even realize how quickly the never-ending time passes and you’re good enough to get back to work.

2. Take it slow and keep the optimization high

You don’t need to take up an enormous burden as soon as you start working and getting yourself involved in activities. You’ve just recovered from an injury. Take your time. Let your body get used to the healing. Do your works step by step and slowly pick up your pace? Injuries are never easy to tune to. So instead of putting your entire focus on what you’re not able to do, try and concentrate on what you can do as your body and mind gets attuned to the fact that you’re healing and you will heal completely in no time. Don’t let your confidence drop and don’t let your will power rot. Have the positive thought firmly places that you will heal and the injury will be a thing of the past. This makes the healing process faster and an easy going journey.

3. Painkillers are not the answer every time

Painkillers are for the weaklings. Yes you do need it to lessen the pain to a bearable level. But you should not make it a habit of getting rid of the pain every time. Pain killers have adverse side effects and it’s not good for the health most of the time. Always keep the usage of these painkillers to a bare minimum. Only make use of it when you absolutely have to. If the pain of the injury is towards its healing side and the pain is bearable, try and avoid using these as they give rise to complications. Try to get into the habit of avoiding the usage of a higher dose of these painkillers.

Thus we see here some very common and easy ways of recovering from an injury.

Don’t these seem to be a much easier, cost – free and a little bit pain free methods of recovery?

Won’t these ways give you much more strength to handle any sort of injury with more of mental strength inside?

Then pay heed to these friendly ways and try recovering in a healthy way.