What is 缶
At the opening ceremony of the Beijing Olympic Games, a strange instrument similar to a jar appeared. Its name is 缶. But you know, in ancient times, it was mainly a large container used to hold liquids, such as wine or water, so it was made tall and simple. But how can you change from a container to an instrument? This is related to the extension of the function of the object. From the pre-Qin period, people like to knock on the cymbals to beat the large pottery. The sound is rough and powerful. Over time, the songs represent a simple singing method. However, archaeology did not find the gong as a specialized instrument, and it was not unearthed with some common musical instruments and drums. It can be seen that the basic function of cockroaches is still a container.
How does the array achieve stroboscopic illumination?
At the opening ceremony of the Beijing Olympics, the performances of the songs and the slogans of Changhong were hit by the songs. As an ancient musical instrument, how does it shine under the hands of the 2008 strong man and form a stroboscopic picture? In fact, all of this is inseparable from LED.
Footprints outside the nest
How are 29 fireworks footprints made?
At the opening ceremony of the Beijing Olympic Games, 29 huge fireworks footprints, from the Yongdingmen, Qianmen, Tiananmen, Forbidden City, Drum Tower, the central axis of Beijing to the Bird's Nest at a precise pace, symbolizing the 29th Olympic Games step by step. China, entering Beijing. These footprint fireworks at the opening ceremony of the Olympic Games are all new technologies from launch to ignition, ensuring the effect of footprints.
On the launch, a rolling launch technique is used. This type of launch technology does not use gunpowder, but instead uses compressed air. By adjusting the strength of the pressure, you can control the precise height of the fireworks launch. Compared with the past gunpowder launch, the accuracy is much improved.
These footprint fireworks are not ignited by ordinary wires, but are ignited by electronic ignition devices.
Beijing Olympics opening stage lighting
Demystifying the opening light projection control system?
In the opening ceremony of the Beijing Olympic Games, colorful and dreamlike lights are undoubtedly the soul throughout. Especially in the final ignition ceremony, Li Ning flew over the virtual reel runway made by a light, which was amazing. All of this depends on the important role played by the light projection control system.
The light projection control system is a complex integrated system with computer lights, laser lights, projectors, consoles, etc., which can be combined to achieve the beautiful stage lighting effects mentioned above. This opening ceremony used a lot of the world's most advanced lighting equipment (equipped with nearly 3,000 computer lights), all of which are controlled by computers.
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24 hours mechanical Timer
Instant indicator
Min.setting time:15 minutes. Max.setting timer:24 hours
With hand switch,can be switched to operating and
setting at any time
Instructions:
1. Set program: 1 pin is equivalent to 15 minutes. Determine desired start time and push down pins until desired
off time.
For instance, if you want electrical devices to work from 8:00am to 11:00am and from 13:00pm to 17:00pm, you
just need to put down allthe pins between the three period time.
2. Set the current time: Turning the dial clockwise until the arrow pointing to
current time.
For example,if now it is 8:00 am, please turn the dial and make sure the
arrow point to 8. (See the picture.)
3. Plug the electrical device directly into the timer. Make sure the electrical
device is power-on.
4. Plug the timer into electrical outlet and the electrical device will be work
according to the setting program.
Note: = Normal Ope n = Timing
Make sure the switch on the Timing position. If it
is on the [Normal Open" mode, the electrical device is
always power-on and the timer function no work.
Specifications:
|
Rated Voltage, Current and Power |
As shown on the label |
|
Time Setting Range |
15minutes24hours |
|
Working Temperature |
-10℃?+55℃ |
|
Operation |
Clockwise |
|
Insulation Resistance |
>100M |
|
Inherent Loss |
≤1W |
Application:
1. To enable high-power electric appliances to run automatically at off-peak time if there is different electricity
price according to different periods of time in some areas.
2. To use for electric appliances which need time control, such as water heaters, air conditioners, drinking
fountains, rice cookers, advertising lights and so on.
3. To control the charging time. For example, battery of electric bikes or mobile phones, storage batteries, etc.
4. Occasions which need switch on/off frequently, like interval spray irrigation for flowersand lawn, cyclical
adding oxygen to fish jar, fountains and so on.
5. Home safety precautions and lighting.
Caution:
1.D o not exceed the maximum ratings of the timer.
2.M ust reset the current time after power failure.
3.D o not plug the timer directly into the working electrical appliances.
4.U nless changing the setting, keep the program same every day.
5.D o not disassemble timer by yourself. Professionals service are needed for maintenance.
6.T his item is only for indoor use.
Mechanical Timer, mechanical timer socket, 24hr mechanical timer, mechanical timer plug, mechanical timer adaptor
NINGBO COWELL ELECTRONICS & TECHNOLOGY CO., LTD , https://www.cowellsocket.com