I'm Fraser Cain, and I'm a sailor. Well, okay, I've got a sailboat that I take out on the water when its warm and the weather's nice here on Vancouver Island. I think it's one of the reasons I absolutely love the idea of a solar sail. Here's how they work Light is made up of photons. Even though they have no mass at rest, they have momentum when they're moving, well, light speed. When they reflect off a surface, like a mirror or a shiny piece of metal, they impart some of this momentum to.
That surface. This effect is negligible here on Earth, but out in space, with forces perfectly in balance, that additional momentum can really add up. A spacecraft flying to Mars gets pushed off course by several thousand kilometers because of light pressure from the Sun.If mission planners didn't compensate for this drift, their spacecraft would miss the planet, or even worse, crash into it. Even though the total amount of pressure per square meter on a solar sail is minuscule, it's constantly streaming from the Sun, and it's totally free.And propulsion that you don't have to carry with.
You is the best kind there is. This is more than just an idea. Solar sails have already been launched and deployed in space. The Japanese Ikaros satellite unfurled a 14meter solar sail back in 2010. NASA launched its own NanosailD spacecraft in 2011. An even bigger solar sail, the Sunjammer, is planned for launch in 2014. The Planetary Society is working on a solar sail project as well. The closer to the Sun you are, the better they work. In fact, a solar sail would be an ideal vehicle to explore the regions of Mercury and Venus, since they receive so much.
Radiation. But you're probably wondering how a solar sail could get down to those planets because light is streaming from the Sun in all directions. It's all about raising and lowering your orbit. If you want to raise your orbit around an object, all you have to do is speed up. And if you want to lower your orbit, you just need to slow down. A solar sail launched from Earth would start out with the same orbital velocity around the Sun as the Earth. To get into a higher orbit, it tilts the sail so that the light.
From the Sun speeds it up. And to get into a lower orbit, it tilts in the opposite direction, and the light from the Sun acts like a brake. A solar sail might even be the ideal spacecraft to make the journey to another star. An interstellar solar sail could lower its orbit so that it's just above the surface of the Sun. Then, it would unfurl the full sail and capture the most possible photons. A series of powerful laser beams would then target the sail and increase its velocity to a significant fraction.
Can you feel a solar wind Ask an Astronomer
Our star, the Sun, is the source of light and heat for us here on Earth, but it has other, more subtle, effects as well. The Sun produces a kind of wind, one that is very different from the breezes that we're all familiar with. Unlike winds on Earth, which are circulating air currents, the solar wind starts in the outer layers of the Sun. There the temperatures are so high that the hydrogen gas atoms are broken up into electrons and protons. These charged particles are churned up by the Sun's strong magnetic field and are flung out through the Solar System, forming this wind.
Occasional outbursts on the surface of the Sun, like this solar flare, greatly increase the strength of the solar wind. So can we ever feel this wind Well, down here it turns out we're very well protected. Long before the solar wind ever reaches the ground, it's deflected by the Earth's magnetic field. Some of the charged solar wind particles can make it though near the poles but are stopped by the atmosphere, producing beautiful nighttime displays of aurorae. Spacecraft that operate beyond the Earth's magnetic field have no such protection, and their sensitive electronics can be disrupted by the solar wind.
The Future of Renewable Energy.is Coming from Drones
The drones are coming! And they're making renewable energy You know, the trouble with wind power is that it needs to be windy. And if it's not you really only have two solutions go out and find the wind, or create it. So, how does one create wind Well that's why I've cooked up this huge vat of chili. Just kidding. Actually, there's a company called Solar Wind Energy Tower that has a solution. They propose building towers out in the desert that will suck up hot, dry air. Now that hot, dry air.
Goes up the tower until it hits the top, where they add in water vapor, making that air heavy. And then the air rushes down at speeds upwards of fifty milesperhour, until it hits turbines which then will generate electricity. The best place to harvest wind energy tends to be the coastline. And if you're like me, you like to get your shade from a nice beach umbrella, not a noisy 300ft tall windmill. Luckily, Makani Power, an engineering firm run by a California wind surfer has come up with a pretty cool idea. They have a wind harvesting drone attached to a rope, which.
Sounds pretty radical if you ask me. The most effective part of a turbine blade is the tip. So the Makani Airborne Wind Turbine travels in a vertical circle in the same path as the tip of a conventional turbine blade. Wing mounted rotors catch the rushing wind, which is converted into electricity by small generators and sent back to the ground via the tether, which is a conductive cable. So why is this any better than a traditional windmill The same reason it's better to live in an RV than an Egyptian pyramid. It takes a lot less material to make, and it's portable.
Mental note. Really need to work on my analogies. It's possible that these Makani turbines could be flown out over the ocean where winds are particularly strong. Now the electricity they generate could just be sent down to buoys floating in the ocean and collected later to be sent back to land. Now of course this doesn't mean we should just abandon our traditional wind harvesting strategies, we just have to make them smarter. Which is what companies like GE are doing. You see, they're adding sensors to wind turbines to collect oodles of data, and turn it into.
Dynamic action on the turbines themselves, so if the wind conditions change, the turbine can automatically adjust the tilt of the blades and maximize efficiency. Clearly, none of these solutions are perfect, which is why we're going to have to continue to innovate in this space. After all, when it comes to renewable energy, the winds of change are always blowing. And that leads us to a question. What renewable energy source do you think is the most promising Is it solar, wind, hydroelectric, geothermal Let us know in the comments below.
How Big Is The Solar System
I'm Fraser Cain, the publisher of Universe Today. For most of us, stuck here on Earth, we see very little of the rest of the Solar System. Just the bright Sun during the day, the Moon and the planets at night. But in fact, we're embedded in a huge Solar System that extends across a vast amount of space. Which begs the question, just how big is the Solar System Before we can give a sense of scale, let's consider the units of measurement. Distances in space are so vast, regular meters and kilometers don't cut it. Astronomers use.
A much larger measurement, called the astronomical unit. This is the average distance from the Earth to the Sun, or approximately 150 million kilometers. Mercury is only 0.' astronomical units from the Sun, while Jupiter orbits at a distance of 5.5 astronomical units. And Pluto is way out there at '.2 astronomical units. That's the equivalent of 5.9 billion kilometers. If you could drive your car at highway speeds, from the Sun all the way out to Pluto, it would take you more than 6,000 years to complete the trip. But here's the real amazing part. Our solar system extends much, much farther than where.
The planets are. The furthest dwarf planet, Eris, orbits within just a fraction of the larger Solar System. The Kuiper Belt, where we find a Pluto, Eris, Makemake and Haumea, extends from 30 astronomical units all the way out to 50 AU, or 7.5 billion kilometers. And we're just getting started. Ever further out, at about 80200 AU is the termination shock. This is the point where the Sun's solar wind, traveling outward at 400 kilometers per second collides with the interstellar medium the background material of the galaxy. This material piles up into a cometlike tail that can extend 230 AU from the Sun.
But the true size of the Solar System is defined by the reach of its gravity how far away an object can still be said to orbit the Sun. In the furthest reaches of the Solar System is the Oort Cloud a theorized cloud of icy objects that could orbit the Sun to a distance of 100,000 astronomical units, or 1.87 lightyears away. Although we can't see the Oort Cloud directly, the longperiod comets that drop into the inner Solar System from time to time are thought to originate from this region.
The Sun's gravity dominates local space out to a distance of about 2 lightyears, or almost half the distance from the Sun to the nearest star Proxima Centauri. Believe it or not, any object within this region would probably be orbiting the Sun, and be thought to be a part of the Solar System. Back to our car analogy for a second. At those distances, it would take you 19 million years to complete the journey to the edge of the Solar System. Even NASA's New Horizons spacecraft, the fastest object ever launched from Earth would need.
Can Your Entire House Run On Batteries
Wouldn't it be weird if one day in the future you were buying a home and the listing said, batteries not included Yeah well, that could totally happen. Hey there people, Julian here for DNews. Electricity is pretty great. It powers my toaster, my fridge, my hairdryer, my clothes dryer, my air conditioner, my humidifier, my dehumidifier, and my pc I use to watch science tutorials. I think I'm gonna keep using it. The problem is, everyone in all the other houses feels the same way, usually at about the same times.
Of day, and they're driving the cost of those tasty kilowatts up in the evening. Of course during the day if you don't want to use power from the grid, you could get some solar panels and harvest sunlight, but that's not helpful when the sun's down, also known as nighttime, also known as the time I need to have electricity to turn lights on to not bang my shins on all the furniture. Enter the battery powered home. The idea is a rechargeable battery stores energy from solar panels during the day or from offpeak hours when grid energy is cheapest, and uses.
That energy during the rest of the day. The problem is if you've ever bought batteries you know they cost approximately one arm andor one leg. Elon Musk thought that was a silly hangup for what is otherwise a great idea and decided to do something about it. Elon Musk, for y'all that don't know, is basically what would happen if Tony Stark lost the goatee. His interests range from online money movement to commercial space flight to, most importantly for this topic, electric cars. His company Tesla Motors has been refining electric car batteries for years, engineering them to be lighter, longer lasting,.
And more efficient. Why don't we take all those batteries, and put them on a wall So they did that. The Tesla Power wall Is basically a bunch of lithium ion cells in a sleek case. They're compartmentalized and liquid cooled to solve the knotty problem of overheating and burning your house down, something that is generally undesirable. If you wanted it as your main power supply there's a model that can store and discharge up to 7 kWh daily and costs $3000. Best of all it should last 10 years, which is approximately.
8 years longer than my laptop battery made it before it wouldn't hold a charge anymore. The trick to this longevity is how much power it outputs. It's only pumping out 2 kW continuously and peak output is 3.3 kW. The problem that then arises is some appliances will use more than that output. An electric clothes dryer could draw that much power on its own. So if you want dry clothes, I hope you weren't planning on using a microwave too. If you wanted to be not reliant on the grid at all, you'd probably need a few powerwalls.
To go with your solar roof panels. Depending on where you live, your power consumption can vary widely, but the average US home in 2011 used 940 kWh per month. A solar setup of that size would cost over $11,000, not including installation or taking tax credits into account. Then you'd need 5 Powerwalls to store all of that sunshine juice, so that's another 15 grand. It's an expensive prospect right now, but as the cost of batteries and solar panels continue to drop, individual homes that are independently powered could.
Become a great way to kick our fossil fuel habit. Inexpensive home batteries are looking like a promising innovation. They're not the only company innovating. Intel creates the breakthrough technologies that make amazing experiences possible. Having Intel inside makes for better experiences outside. Intel drives innovation with products like processors, wearables and IOT devices, and within data centers. In the PC and beyond. Going green sounds like a lot of effort. Is it really worth it Trace explains why yes, totally, it is, right here. Would you use the powerwall Would it be a supplement for your energy use or would you.
Solar and wind hybrid power generation system SolarMill Tosmo co., ltd.
This is TOSMO Co., Ltd. Today, I will introduce a hybrid generator using both wind and solar panels. Our company is a sole agent in Asia of windstream technologes Corporation of America. We first exhibit this time. Feature is the wind power generation turning now and solar power. If it is only solar, it is not possible to generate electricity at night. It can generate electricity for 24 hours to get the wind. Wind speed will start power generation in 2m s. Windmill will stop automatically for safety, when wind speed exceeds 18m s.
Comparing Midnite Solar Classic MPPT solar charge controllers
Hi, I'm Amy from the altE Store. We're going to take a look at the Midnite Solar Classic MPPT solar charge controller family. There are 9 models, easiest to describe divided into two criteria, voltage and current range, and feature set. All models are made right here in America. The Classic is available in a 150V DC 96A, 200V 79A, and 250V 63A model. I have here a sampling of the models, the Classic 250, Classic SL150, and Classic Lite 200. All models will charge battery banks from 12V to 72V. The whole Classic Line has MidNite's HyperVOC feature which extends high voltage.
Input limits when needed. With HyperVOC, because the voltage of silicon solar panels goes up when it gets cold, if it happens to get colder than you designed for, and the voltage of your solar array goes higher than is safe for the Midnite Classic charge controller, instead of getting damaged from the high voltage like other charge controllers would, it will put itself into a nonoperational self protect mode until the panels warm up and the voltage drops back into the safe range. Within each of those voltage and current ranges,.
There are also 3 levels of features available. They are like the Goldilocks and the 3 bears of charge controllers. The Classic is their full featured model. It has Solar, wind and hydro maximum power point tracking modes. It has a display for configuring and monitoring your system and push button programming. It's got ethernet capabilities to remotely monitor and configure your charge controller, and datalogging capabilities. The Classic also has Ground Fault Protection and is one of the few charge controllers in the industry to have Arc fault protection. The Classic Lite is a stripped down version.
Of the Classic. It can also be used for solar, wind, or hydro. But instead of the graphical display screen for viewing and programing, it has an LED indicator panel with DIP switches. The Classic Lite also comes with the free full featured software to allow you to program, log and monitor the Classic via a PC or ethernet. It does have ground fault protection, but does not have arc fault protection. The lite is a perfect solution when you have 2 or more Classics in the system, one can be the full featured Classic, and the others can be the.
Lite, since only one of the Classics in the system needs to have the meter to monitor the entire system. It also is a great solution if you are using the remote display, so you can monitor your system from your living space, while the charge controller is in the utility room. The newest Classic SL is juuuust right in the middle.It does not have wind or hydro capabilities. It is a simplified solar only version of the Classic with streamlined menus. The Classic SL has the graphics panel and ground fault but no arc fault or Ethernet capabilities.
This is the perfect charge controller for you if you have a solar system that you do not need arc fault protection or remote monitoring from a PC or the internet,or, you have multiple Classics, and only need the ethernet on one of them to remotely monitor the system. I hope this helped you understand how to choose the right Midnite Classic for you. Please like and share this tutorial, and subscribe to our altestore channel so we can notify you of new tutorials. Also go to our website at altestore where we have been making renewable doable.
Can We Colonize Mars Jeffrey Hoffman on the Mysteries of Mars FURTHER Episode 2
When you look at the history of human migrations, when we find an environment that we can live in, some people go there. If humanity can, some day, establish a presence on more than one planet, we've really increased our chances of long term survival. The degree to which the first crew going to Mars is going to be separated from the earth both physically and psychology is totally unique. You don't have the immediate contact with mission control back on earth. You can't have a conversation with your family or friends.
You're really on your own and that will definitely be a very unique psychological situation. It looks very likely like there was a time in Mars' past history where Mars did have a dense atmosphere where there was flowing water on the surface of Mars and maybe even a big ocean. What happened to Mars because now it's a dry desert basically Could you turn Mars back We can't heat up the center of Mars enough to start up a liquid core, at least not with any energy source or technology that we can imagine.
If you could figure out a way to put an atmosphere around Mars, how long it would last, that I don't know because it would still be swept away over time by the solar wind. So, in terms of technologies which are available to us today, I don't see this socalled Terraforming of Mars, turning Mars into a totally habitable planet. like the Earth. That's beyond anything that we can imagine today. But I never like to say never because a thousand years ago, who would have imagined that people could even get off the surface of the earth and fly in space and.
Will Solar Storms Cause The Apocalypse
Will Solar Storms Cause The Apocalypse,Electromagnetic energy from solar winds could cause a massive geomagnetic storm once it hits Earth. Could the Sun destroy Earth Amazing 4K Footage of Our..
What Is Solar Wind And How Affect The Earth.Explanation of what is solar wind and how the Earths magnetic field protects us from it..
Are Wind And Solar Energy Worth The Effort?.Renewable energy will undoubtedly play a part in our future. But incorporating technologies like solar panels and wind energy into our outdated electrical grid is..
Can We Power Everything With Solar Panels?.Solar panels are the future of energy efficiency, but its their price tag that has people second guessing. Have scientists found a way to make them cheaper.
Solar Wind's Effect On Earth?.2006 WGBH Educational Foundation. All rights reserved. Footage courtesy of NASAGoddard Space Flight Center NASAs Solar Dynamics Observatory is..
Why Mars Died, And Earth Lived.This tutorial explores the most basic question of all why we explore space Be sure to experience the visual spectacle in full HD, 1080P. The Mars rover..
Solar Wind Introduction Sun Series 1
Solar Wind Introduction Sun Series 1,Sun Series Solar Wind Introduction Supplemental Resources Available Summer 2014 Contact BenObservatoryProject.ObservatoryProject..
"Can You Feel A Solar Wind?" (Ask An Astronomer).Dr. Robert Hurt explains what a solar wind is, and how it affects us here on Earth..
What Is An Aurora? - Michael Molina.View full lesson ed.tedlessonshowepicsolarwindsmakebrilliantpolarlightsmichaelmolina Why do we see those stunning lights in the northern..
Missouri Wind And Solar Wind Tunnel Disaster Part 9 1st Wind Turbine In.Missouri Wind And Solar website.mwands Our facebook page.facebookpagesMissouriWindandSolar122310541038 Our..
Ground Mount Solar Install And Wind Turbine Mount On Barn By Off Grid Contracting.In this tutorial I share with you one of our builds off grid for a customer that is running a barn and camper off the grid now using this system. If you are interested in..
NASA Space Sounds.NASA Space Sounds Information about the recordings and sample sounds of the planets, moons and rings of planets in our Solar System. Note both Song of..
SOLAR-WIND POWERED BICYCLE.I have made this electric bicycle as final yr project with support of my team. This bicycle runs at 3035kmhr speed at zero emission without peddling and without..