Order of the National Green Tribunal in the matter of In Re: News Item titled "Nayar river is vanishing - a yatra reveals conservation goes beyond science and policy" appearing in ‘The Down To Earth’ dated 03.06.2025. The original application was registered suo-motu based on the news item titled "Nayar …
PROFESSIONAL tennis players gracing the courts at Wimbledon may be rich and famous but they are also unwitting guinea-pigs in a new experiment in which the laws of physics - and especially aerodynamics - are being put to use to bring about certain changes. The past 10 years have seen …
THE microelectronic revolution that we've witnessed during the past decade has simultaneously aimed at miniaturising the components of a circuit as well as enhancing its performance. For instance, the Intel Pentium microprocessor is about twice as powerful as the now vintage Intel 80386 processor, while their sizes remain roughly the …
EVER since the first synthetic diamond process - the high-pressure catalytic - was perfected by General Electric i and De Beers in South Africa, the mat found many applications in industry. The remarkable mechanical prop diamond make it ideal for many pt Synthetic diamonds are extensively grinding and cutting tools …
ALTHOUGH fibre-optics has brought a revolution in the field of teleco nications, the stumbling blocks arel the switches in use. Though the move through the fibres at the spi light (300,000 krn per sec), the inter between the electronics and the filll by electronic switches which are extrei slow in …
It is commonplace to find disks with gigabyte capacity. But now, two scientists, C R Stroud and M W Noel, working at Rochester University, have been able to manipulate the position of the electron in an atom. Theyplan to use it to create an atomic memory with letters written directly …
Among the known elementary particles, neutrinos are the hardest to detect and study. But now there are plans to organise 'mass migration' of neutrinos to another detector many miles away. An experiment called NuMl being conducted at Fermilab, Illinois, US will send an intense beam of neutrinos some 1,000 km …
ONE of the curious facts of our universe to how it is that the deeper one in space, the more one travels in time. This is because light (or signals emitted from a distant in space take time to reach us; the signals we recieve must have ted a long …
LIGHT emitting diodes (LEDS) are C0113monly used as displays for many con- Sumer electronics products. In the last few years, tremendous progress has been made in the technology for improving the quality of these display units. LEDs with much higher light intensity and a longer life have been developed now, …
IF WILHELM Roentgen was to see a modern medical imaging laboratory today too years after the first x-ray images he would not recognise it. From ultrasound to magnetic resonance imaging machines, from PET (positron emission tomography) scanners to radionuclides, the range of devices used today for probing the human body …
POLYMERs are probably the most easily visible materials in our lives. From bottles to toys and from crates to packaging materials - they are omnipresent. Polymers are basically chemical compounds of high molecular weights consisting of a number of structural units - called monomers - which are linked together by …
High energy cosmic rays, amongst the most perplexing objects in astrophysics, have energies upto a hundred billion billion electron volts (a proton's mass is only a billion electron volts). There is no known mechanism which can explain the acceleration of particles to such high energies. To study these mysterious particles, …
A team of astronomers at the Cerro Tololo Inter-American Observatory in Chile have sighted the most dis- tant supernova. The redshift (a measure of how fast the object is moving away from us) of the type In supernova is 0.478, which translated into its distance from us, is about 6 …
The supercomputers of today face a problem. The processors, which are all connected in parallel, have to wait for data from the memory-, this waiting time has become the limiting factor in a supercomputer's speed. The Tera Computer Co in Seattle, US, is trying out a new idea to ensure …
THE big bang cosmological model is one of the most successful models of our universe. Its efficacy in predicting the temperature of the cosmic microwave background radiation and the profusion of light elements in the universe (like helium and lithium) remains unsurpassed by any of the competing cosmological models (Nature, …
COSMOLOGY is somewhat of an oddball among the physical sciences. Experimental facts about the origin and the ultimate fate of the universe are usually scarce, making cosmology a concoction of theory, some facts and much speculation. However, the scenario has undergone a change in the recent past because of the …
DOES our universe have antimatter (the oppositely charged counterpart of ordinary matter) in substantial quantities? Do we have whole galaxies made up of antimatter, much like our own galaxy which is made up of matter? These are some of the brainteasers which could be closer to a solution if Massachusetts …
Thefamous i9th century pipe organ at the Notre Dame Cathedral in Paris has gone hi-tech. The French ministry of culture has spent US $2.2 million to digitise the organ. Now, a system of microprocessors and sensors interprets how the keys and pedals have been pressed. The system, once perfected, will …
The inability to produce cheap and efficient photovoltaic cefls that convert solar energy into electricity has, till now, hamstrung solar power generation, Scientists have -xperi- mented with alternatives to silicon (used for photovoltaics) like organic polymers, which, while being cheaper and easier to process, are not effective enough. Now 2 …
The US Department of Energy is experted to endorse plans of build- ing a US $3 billion particle accelerator. The primary purpose of the accelerator will be to produce tri- tium for nuclear weapons (Nature, Vol 376, July 20, 1995). But the facility will have another spin-off. it will be …
PARTICLE accelerators, like the one At fermilab in Illinois, us, have been invaluable Tools in our quest for understanding the nature of the microcosm, e accelerators smash particles her, by analysing the resultant ris', one can gain valuable insights he structure of matter. The higher mergy with which the particles …
