As of February 2011, Bit coin price was $1.Ten years later, the cost of this crypto currency(加密货币) was $51,000 in 2021.

It’s this shocking takeoff that has prompted many people to consider Bit coin trading. But what’s the secret in Bitcoin trading? How do you become a successful Bit coin trader?

Trading platforms like the bit coin system app make investing in this crypto currency easy. These are marketplaces where you can purchase and sell Bit coin. Using such a platform enables you to learn about Bit coin and even trade more efficiently.

Bit coin has existed for slightly more than a decade and crypto currency is already receiving global acceptance and recognition. But Bit coin prices can fluctuate wildly. Luckily, this can also be a chance to gain heavily from Bit coin trading.

When dealing with Bit coin or any other cryptocurrency, consider different investment opportunities. Using a reputable(信誉好的) Bit coin exchange(交易所) is an excellent way to start. That’s because a pleasant crypto exchange provides all the information you need to make an informed decision.

Essentially, you only need capital to start purchasing and selling Bit coin for profits. However, it would help if you also had a digital wallet to store your coins when not trading. Only move the money you need to trade from your digital wallet to your exchange.

Every investment comes with some risks. Before you invest in or start trading Bitcoin, know your reasons for engaging in this activity. If you can’t tolerate risks, Bit coin might not be an ideal investment for you.

Buying and holding Bit coins is an excellent strategy for investing in this crypto currency. However, you should be ready to withstand the fluctuating market prices. Don’t be tempted to sell all your coins when the price starts decreasing. Instead, be prepared to buy and hold your Bitcoin on a long-term basis.

From video games and museums to medical training, virtual reality (VR) has been changing our lives for the better. However, this amazing new technology has a so-far unsolvable shortcoming: motion sickness. “With modern VR systems, the possibility of motion sickness after only 15 minutes is anywhere from 40 to 70 percent.” Thomas Stoffregen, a researcher told ABC News. Indeed, some VR applications have a user-sickness rate of nearly 100 percent!

When caused by VR, this sickness is called cybersickness. It’s probably caused by sensory conflict, explains Stoffregen. When you are wearing a VR device, your body’s motion sensors cannot match the information received by your eyes. For example, when we wear a VR headset and ride a virtual roller-coaster, we think we are going up and down, but our bodies stay still. It leads to confusion of balance and spatial orientation. Sickness is our bodies’ natural response to this confusion. Adding to this problem, Stoffregen says, “Women are more likely to feel sick from the VR experience than men.”

According to a study by Bas Rokers, a scientist at the University of Wisconsin-Madison, US, one reason could be the headsets. To work properly, VR headsets must match up with your pupil distance. Since they are designed larger than the average PD, not everyone gets the best experience.

Rokers found that when the headset PD is too large, users experience greater discomfort. Based on his studies, about 90 percent of women have a shorter PD than the headset is designed for. In comparison, only 5 percent of men had this problem. ABC News says that cybersickness presents a “serious barrier” to widespread use of VR technologies. However, people believe it will become comfortable and easy to use and that it can play a great role in our lives.

The right paint can add appeal to your walls and now it can also make them smarter. Researchers recently transformed a wall into an outsize trackpad and motion sensor by using low-cost conductive paint to create a large grid of electrodes（电极）.

Such a smart wall can sense human touch and track gestures from a short distance. It can also detect where electrical equipment is and whether it is switched on. The technology could someday turn on lights when a person enters a room, track a player's motion in an interactive video game or monitor a child's television use. "Walls are everywhere, so why not turn them into sensors for smart homes?" says Yang Zhang, a computer science doctoral student at Carnegie Mellon University. who helped to develop the concept.

To create the high-tech surface, Zhang and his colleagues applied painter's tape in a lattice（格子结构）pattern to a twelve-by-eight-foot wall, and then coated it with commercially available conductive paint. Removing the tape left a pattern of diamond-shaped electrodes, which the researchers connected using thin copper tape strips. Finally, they wired the strips to a custom-built circuit board and covered the wall with standard latex（胶乳） paint. The entire project took four hours and cot less than $200. In theory, Zhang says "Anyone can use the technique to make a wall smart. "

In the wall's appliance-detection mode, the power is turned off. The researchers detected iPads up to 6. 5 feet away from the wall; fans and floor lamps could be sensed from about 10 feet. Zhang and his colleagues presented the wall in April at the ACM Conference on Human Factors in Computing Systems.

"Engineers have long dreamed of technologies that blend into our surroundings, "says Christiar Holz, a research scientist at Microsoft Research in Redmond, who did not participate in the work. "It nicely questions our understanding of what a device might be and demonstrates how rich sensing technology can combine with everyday objects."