Another speaker, Secretary for Security Chris Tang Ping-keung, explained different types of crimes in the proposed law, including treason, insurrection, theft of State secrets and espionage, sabotaging or endangering national security, and external interference, she said. Cheung believes that as a di...
Although there are many different types of composting toilet, the principle is the same in all cases: the waste falls into a well-ventilated container where, over a period of time, aerobic bacteria (supplied with lots of oxygen) greatly reduce its volume (much like kitchen waste on a ...
In buses, fluid used to cool down the diesel engine is often passed through a heat exchanger and the heat it reclaims is used to warm cold air from outside that is pumped up from the floor of the passenger compartment. That saves the need for having additional, wasteful electric heaters ...
5People who manage to find their passions are mostly interested in making something different, which may be some types of things such as providing a job for themselves, or creating a piece of art. On the other hand, people who are still searching for passion can't think out of the box ...
Indeed, Ballard, one of the leading fuel-cell manufacturers, argue that fuel cells will soon be the most viable solution for heavy vehicles such as trucks, buses, trains, and even planes that would otherwise be powered by dirty fossil fuels. In California, there's now a huge push to make...
An engine needs to spin round relatively quickly to work efficiently (usually thousands of times a minute), but a car's wheels never go that fast. The power an engine can produce at any given moment may be very different from what the driver needs. For example, if you're moving off ...
Some versions of the German Inter City Express (ICE) train and Japanese Shinkansen ("bullet train") have experimented with eddy-current brakes and future versions of the French TGV are expected to use them as well. (The ICE3 train, for example, uses high-power, linear brakes on one of ...
(this one's the vaned type) shifts fluid from inlet to outlet like a paddle wheel. Watching what happens to a single segment, we can see that it fills with fluid one moment, before being pushed around to the outlet some time later. This is a very simplified example of what's called ...
For this, we have near-field communication (NFC), which allows smartphones (or other devices) with embedded chips to read, write, and connect to other nearby NFC devices (card readers on buses or access turnstiles at sports stadiums, for example). Using 13.56 megahertz-frequency radio waves ...