fenomena

Selasa, 25 Oktober 2011

Wien oscillator circuit

Wien oscillator circuit is in my opinion one of the oscillator circuit is quite simple. Only by using a single Op-Amp IC and some resistors and capacitors and two diodes. You can use a 5 volt zener diode to the second zener diode above. So you can make it as a pilot project, add a collection of calculated electronic circuit inside the head.

To be honest I did not design its own oscillator circuit mentioned above. I only get the circuit from a sample circuit electronics software. Above wien oscillator circuit using IC op-amp as a component of a bridge builder. Basically the above oscillator circuit is inseparable from the nature of the strengthening of the op-amp circuits in general. Only use the charging and discharging capacitor properties as the creator of the condition of the signal swing. Take a look at the positive input of op-amp, the input signal is obtained by dividing the voltage between the series resonant circuit RC and parallel RC. Where this is the generation process of the circuit in the form of a sinusoidal signal (you can see the working principle of the LC resonant circuit).

To find the value of the frequency of the circuit above you can use the formula is 2 * pi * R * C. Where in the circuit above R = 20kohm and C = 10nF. Zener diode is mounted upside down in pairs so that the resulting signal serves as a signal box but not sinusoidal signal is perfect. You can just change the supply voltage to 9V-9V & if you do not have a 15 V supply, but the resulting output signal will have a maximum voltage of 9 volts.

Senin, 03 Oktober 2011

Phenomenon hello sun

This Phenomenon hello sun is in fact tantamount to the formation of a rainbow in the morning or late afternoon after a rain. rainbow arch is often seen at the bottom of the horizon because the particles of water vapor that deflect sunlight gathered in the lower atmosphere. On the other hand, in the morning or late afternoon sun was still at a low angle.

"In this tilted position, the ability to refract light water particles is greater, so the colors that appear also more complete," he explained.

In the daytime, when the Sun in a position perpendicular to the Earth, the ability to be low so that the deflection of light color that looks very limited. "The color looks dark because of the view toward the Sun also blocked the dust. If in the morning, when the air is still clean, what appears is the color red,"

Jumat, 30 September 2011

Bowling Green

Kentucky Trimodal Transpark construction plans immediately canceled the event of ground subsidence of 200 feet in Bowling Green, Kentucky. In this area is known sinkhole-prone land and every time something like this could happen again. This makes development around the area here is very risky.

Montrose Avenue sinkhole

Land sinkhole 80 feet wide with a depth of 15 feet occurred in the middle of Montrose Avenue. The highway was eventually shut down for two weeks in early January of last year. Fortunately no casualties because of this incident.

Daisetta

Daisetta
In Daisetta, Texas has recently (May 2008), preceded by collapse land 20 feet wide in a residential area, be expanded to 900 feet with a depth of 100 feet in a day and swallow the telephone poles, buildings and vehicles. Local authorities have examined the possibility of leaks in the lines of oil and natural gas there. Sediment and sludge oil generated also endanger lives a few houses nearby.

Merapi Petruk

Photo of Mount Merapi Petruk Cloud Phenomenon New Magic. Strange Clouds Similar incidence figures Puppet Petruk Truly Unique Heat Formed From the Clouds of Mount Merapi (Wedhus Gembel). Does this figure of supernatural guardian of Mount Merapi, a strange phenomenon appeared before the eruption of Mount Merapi on 26 October. Clouds on Mount Merapi forming an image similar to the head Petruk, one of the characters in the puppet world. See also Forecast Natural Disasters New Paranormal Phenomenon Mount Merapi erupts turmoil of the Universe and Magic But True Story of Childhood Can not Laugh and Cry Emotions Can the Dead / Death.

Successfully captured the strange event Suswanto (43), village residents Sudimoro, Pucang Anom, Srumbung District, Magelang, Central Java, with his camera. Petruk cloud-like figure was seen on Tuesday, October 26th at approximately 17:00 pm.

Suswanto told, when it's her by chance out of the house and looked in the direction of Mount Merapi. That's when he saw a cloud-like figure Petruk. "Then I grab a camera and photographed. Initially just for fun, but then the picture is staggering, "he said in Magelang, Monday (11/01/2010).

Mentioned, the cloud on the summit of Merapi that set the pattern Petruk head with long nose and pigtails curled upward. His figure is facing toward the South, namely Yogyakarta. From the front of the house to the peak of Merapi Suswanto approximately 13 kilometers.

For the community at Merapi Slope Petruk figure has its own myth and mystery. They believe Mount Merapi mastered supernatural figure, namely Mbah Petruk. A number of residents who saw the shots Suswanto believe that the picture is similar to figure Petruk, the guardian of Merapi.

They suspect, Petruk show themselves as a sign there will be a big disaster on Mount Merapi. Mbah Sihur, (54) Gaten village residents, village Ketunggeng, Srumbung, said the emergence of cloud-shaped head Petruk belief as a warning to residents around Merapi to go away. "By looking at him that the south has proved a severe hit by the eruption of Merapi is Yogyakarta," he said.

Mbah Mbah Petruk Sihur believe dwells in the crater of Merapi. Petruk beliefs about the transition could not be separated from the history of the Hindu Majapahit to Islam Demak. Communities around Merapi as a figure believed Petruk Sabdo Palon lolo carrying the King of Majapahit Barawijaya adviser V.

At the end of the heyday of Majapahit and the inclusion of Demak, UB V choose dwells on Mount Lawu which lies on the border of Central Java and East Java. This is done because he refused to convert to Islam.

So Sabdo Palon also chose to follow the referendum the king, only he did not come to the Mount Merapi volcano Lawu but as a place to stay. As a warning against political opponents who were in power at that time, he took an oath that the future ruler of the country will claim the promise of amanahnya welfare of the people.

Saola Size

Saola are distributed in scattered locations in the Annamites, along the northwest-southeast Vietnam - Lao border. In Vietnam, the species is distributed from the Ca River in the north to Quang Nam province in the south, but its exact limits are not clearly understood.

Saola Size
Weight: 80-100kg
Height: around 85cm

Arsip Blog

Selasa, 25 Oktober 2011

Senin, 03 Oktober 2011

Jumat, 30 September 2011