Category: Science

Computer Science is Changing Everything

ehorowitz27 on

The video is an interesting introduction of coding.

19th was about agriculture and industrial revolution electricity.

20th physics was about engineering

21st is about digital internet computer

Everything has been upside down by software.

In agriculture, CS and technology has made thing easier and production higher, and made things possible and food cheaper.

In fashion and design, CS brings new jobs combining programming with other activities. Today, Half of the products are software products. You need to learn programming.

In medical area, software are now very useful. As an example, to find a new virus. The computer can compare the sequences of a virus.

Computer science can save energy. Some software can limit carbon emissions.

In meteorology, it is now impossible to do the calculations without a computer, to forecast a weather.

In public safety, the technology helps to find missing children.

In art, the medium of computer can be creative.

In entertainment, films are created with computers too.

Some people consider nowadays that programming is as important as knowing how to read.

Computer science has changed the world.

 

 

 

Maglev Trains Blog Post #1

ehorowitz27 on

 

A maglev train is a train that levitates and it repels because of the magnets on the train and the tracks. When the same poles face each other they repel. When different poles face each other they attract. In order for a maglev train to work, the same poles have to face each other (north to north or south to south). My group’s idea was to make the track have five ring magnets down the center and two long strip magnets on the sides. On the train we have 8 disc magnets around the edge.

We failed because some magnets were facing north and south on the track but on the bottom of the train the magnets were facing south. So we failed because some attracted and some repelled. We agreed to each take turns testing our idea so now we will try the next idea.

Next time we will be careful to make them all face north with a bar magnet because the bar magnets are labeled. We will know if it is north or south. Now we will try the next idea. The next idea will be three long strip magnets on the track and three smaller strip magnets on the train. I hope it works.

 

This is our first design for our maglev train.