The Danyong - Kunshan grand bridge in China is the largest bridge in the world.
It is 164.8 km long.
The bridge was made to connect cities.
It goes over fields, rivers, lakes and small towns.
It is built to survive storms, floods and even earthquakes !!!
It is part of a train line.
It is often advised to place peacock feathers to get rid of lizards in the house.
But why lizards flee by seeing peacock feathers ??
The crucial element behind the aversion shown by the lizards is the existence of eye spots o peacock feathers !!!
The spots take the form of a larger animal and provide the visual illusion that the nearby predator is peering at the lizard.
Since the lizards belong to reptilian category and take the visual cues from the spots on peacock feathers for granted as a threat.
That's why they flee upon spotting the feathers !!!
This fleeing behaviour is a form of survival strategy......
At most airports, planes have runway all to themselves.
But in New Zealand's Gisborne airport, trains and aircrafts take turns using the same runway !!!!
The airport runway is intercepted by railway line, which divides the main runway nearly in half.
Trains and planes must give way to each other !!!
If a train is passing through, aircraft must weight and vice versa.
Interestingly, airport controls the railway signals and also the aircraft signals !!!!
Coordinating flight and train schedules without overlap is a daily challenge for airport staff.
This Bheja Fry question was on YouTube.
Question
2 + 3 = 13
3 + 4 = 25
4 + 5 = 41
5 + 6 = ??
Answer
We can clearly see a pattern.
Sum of squares of numbers have been given !!!
2^2 + 3^2
==>> 4 + 9
==>> 13
3^2 + 4^2
==>> 9 + 16
==>> 25
4^2 + 5^2
==>> 16 + 25
==>> 41
Similarly,
5^2 + 6^2
==>> 25 + 36
==>> 61 !!!!
Rockets need to achieve specific speeds and altitudes to reach and maintain orbit.
A heavier rocket requires more energy. It becomes expensive to develop, test and maintain.
Helium has very low boiling point. It allows it to remain at gaseous state even in super cold temperatures because rocket fuels will be at that temperature.
Helium is used to pressurise fuel tanks, ensuring fuel flow to rocket engine without any interruption.
It maintains the overall pressure inside. As it is non reactive, it can safely mingle with tank's residual contents.
Helium is also used as lifting gas in balloons and airships.
Inhaling a small value of helium gas, temporarily changes the timbre and quality of human voice.
