India will soon be the fourth country to have hypersonic missiles. After US, Russia & China only.
Congratulations to all scientists. 1/n
Hypersonic missiles fly with more than 5 Mach speed. Which means five times speed of sound. Supersonic is more than Mach 1.
They use SCRAMJET engines. Higher version of RAMJET engines, in short Supersonic Combustion RAMJET (SC+RAMJET) engines. 2/n
Ramjet engine works on principle of Ram effect. Which in simple terms utilising vehicular speed for compression.
But for combustion speed need to be slowed down. Combustion at Sub sonic speed. Which means during expansion there is a check on velocity of vehicle. 3/n
They are ecosystem doctors. But in recent years we have lost 90-99% of vulture population in India. Eg white-backed vulture faced a 99.9% decrease whereas slender-billed & long-billed vulture faced 97% decrease.
Many reasons for their decline. But prime reason behind reduction in Vulture population in India was use of Diclofenac in cattle drugs. This cause acute renal failure & they die.
That is why now diclofenac is banned in cattle drugs.
Many conservation breeding programs are also ongoing with good results from Pinjor to Buxa. Where they are raised & later released in wild.
Some of them are equipped with Platform Terminal Transmitters for tracking & to keep a close watch. For study also.
Today is Earth #OvershootDay. It is a day when we already consumed all the biological resources that Earth can renew during the entire year.
Now we need 1.6 #earths to meet our annual demand. Alarming !!
We all consume un-equal resources. Example if all population consumed like USA then overshoot day would by 14th March. It shows inequality prevailing around the globe. This year we are able to push overshoot day due to pandemic led low consumption. But we need long term plans.
So if all consumed like USA we needed 5 earth to cater the demand. Developing countries are consuming less. Post pandemic we have a chance to take a new & sustainable path. To push the day.
Show me a more beautiful bird than this & get a prize. A common KingFisher.
Please post all with name at least. Not all are birders here.
Just for the record. This was the last time I started a thread on birds on twitter. It became a news in national media. So make your entry carefully. People are watching 😄
- acts as buffer & reduce impact of cyclones & #storm surge.
- they break the #wind force
- provide #habitat to #animals during cyclone or otherwise
- they reduce #pollution.
We just need to protect them.
So how it works. Mangroves create a maze & dense habitat. With species which are salt tolerant & special adaptations. They act like buffer & consume the winds & energy. So after passing the storms get dampen. You must have read in ‘Theory of Vibration’.
They are prop roots. In #mangrove#ecosystem they are adventitious support roots. They Grow down from lateral branches, in a way support trees, with doing other root functions. Additionally roots buffer against damage to coasts & enhance biodiversity & carbon sequestration.