free english classes online

How I went from insomnia to the best sleep of my life (and how you can too).
Sleep. Some of us can’t get enough of it, while others are in a love-hate relationship.

For many years after becoming an entrepreneur, I was the latter. Like every human, my mind and body needed sleep to function. The problem was, I had trouble actually falling asleep in the first place.

Now, I will say that there are variances of how one would define an insomniac. I wasn’t suffering from chronic insomnia that could do serious damage to my well-being. However, there were many periods when I would only get two to three hours of sleep during the week.

If mild and periodic insomnia is something you face, or even chronic insomnia, read on. As my work, relationships, and overall energy began to decline further, I took serious action to research and ‘self-experiment’ on fixing my insomnia for good.

Can an Arrow Fired Straight Up Fall Fast Enough to Kill You.
In a recent episode of Mythbusters, Brian and Jon (the new MythBusters) wanted to see what happens when you shoot an arrow straight up into the air. It will obviously come back down—but would it still be moving fast enough to kill you? If you are a MythBuster, the best option is to actually shoot an arrow straight up into the air and measure its velocity on impact. But for normal people, it might be better to just calculate the final arrow speed. Also one note—I& #x27;m currently a science consultant for the show.

OK, let& #x27;s start with a basic physics problem. How fast would an object be moving if you dropped it from a height of 300 feet (91.4 meters)? When an object is in free fall, there is only the gravitational force acting on it. Since both the acceleration and the gravitational force depend on the mass, all objects fall with the same acceleration (regardless of mass) with a rate of g = 9.8 m/s2. Of course, this is only true if you ignore air resistance—but we will get to that soon.

If the object starts at a vertical postion y = h and ends at y = 0 meters with a starting speed of 0 m/s, then the final velocity can be found with the following equation. If you want more details on kinematics, here is a resource.

Using the starting height of 91.4 meters, I get a final velocity of 42.3 meters per second (which would be 94.6 mph). So right there you can see that this is a fairly nice estimation of the motion of the arrow. But that analysis leaves off one important aspect—air resistance. As an object moves through the air, there is a force pushing back in the opposite direction of the object& #x27;s velocity. The magnitude of this air resistance force increases with velocity and also depends on the air and the size of the object. This air resistance force can be written as the following equation:

Dolby Digital Plus 5.1 and HDR are coming to the Razer Phone's Netflix app.
The Razer Phone has already proven to be quite the mobile entertainment center, due in no small part to the device's speedy 120Hz display. However, Razer will soon be partnering with Netflix to improve the experience even further.

In an upcoming software update, both companies will be bringing Dolby's Digital 5.1 surround sound functionality and HDR video playback to the Razer Phone's Netflix app, making it the first smartphone to pack both of these technologies into one device.

"The Razer Phone brings an incredible Netflix viewing experience to the smartphone," said Anthony Park, Netflix's vice president of engineering. "We look forward to delivering this experience to our members around the world so they can watch their favorite entertainment on the go in the best possible quality."

The 5.1 surround sound feature will be accessible by using either THX-certified headphones or the device's built-in "Dolby-optimized" speakers.

Add a head-up display to any car with this $48 device.
Have you ever been in an expensive luxury car and seen the head up display (HUD)? It’s not just cool technology, it’s also a great way to drive safer. Since a HUD puts important information like speed, RPMs, and gas mileage directly at the bottom of your line of sight, you can keep your eyes on the road as you drive. What you might not know is that you don’t need a $75,000 luxury car to get an HUD. The AutoLover A8 5.5 inch OBD II Car Windshield HUD Head Up Display works with any modern car and it only costs $48. Definitely check it out.

Here’s what you need to know from the product page:

Twitter reveals what it would take for Trump’s tweets to be censured.
In a blog post last week, Twitter finally responded to the growing concerns about Trump’s seeming carte blanche to send whatever messages he wants on the service, regardless of whether or not any of his tweets break the service’s rules. Basically, Twitter decided that we’re all better off if world leaders are able to express themselves freely on the platform and confirmed that it has no plans to ban the president or take down his most controversial tweets.

While some of the platitudes in Twitter’s blog post failed to ring true, the explanation made sense. That aside, Twitter can run its business any way it wants. But as much sense as it made, the explanation was still a bit lacking, which is why Bruce Daisley, Twitter’s VP in Europe, followed up on the post in an interview with BBC Radio 5 Live.



Don't Miss: Add a head-up display to any car with this $48 device