SubhaBloG

Star Lifecycle A black dwarf is the stage after a white dwarf. It takes so long for stars to get to this stage that none has probably ever gotten to this stage. Our universe is so young and it will take a few times older than our universe even is for any sun to turn into a black dwarf. Our nearest star, Proxima Centauri is a red dwarf and scientists believe that it will take billions of years for it to end it's life cycle and eventually become a white dwarf and then a black dwarf. Black dwarfs are stars that are burnt out and do not have any light or heat anymore. Our Sun will probably become a black dwarf too someday. A white dwarf only has the radius of 0.02 of the Sun and it's true brightness is 0.005 of the Sun. It's surface temperature is 45,000 degrees Fahrenheit or 25,000 degrees Celsius.  A white dwarf is not really white, its color depends on its temperature, and it can be from violet to deep red. A white dwarf can not be seen without a telescope. ...

10 New Innovations That Could Change the World AGRICULTURAL DRONES Farmers have begun to use agricultural drones adorned with cameras to improve the treatment of their crops. The drones allow farmers a unique perspective that previously-used satellite imagery could not provide. They help to expose issues with irrigation treatment, soil variation, and distressed plants at a much lower cost than methods like crop imaging with a manned aircraft. The success of the drones is made possible by technological advances in GPS modules, digital radios, and small MEMS sensors. Together, these advances allow farmers to bring greater precision to their craft in order to reap greater rewards. ULTRAPRIVATE SMARTPHONES As concerns over personal privacy grow, particularly in terms of new technology, a Maryland-based company seeks to provide an alternative. Silent Circle, encrypts clients’ voice calls, text messages, and file attachments. Encryption prevents potential eavesdroppers from lis...

Reversing Paralysis The French neuroscientist was watching a macaque monkey as it hunched aggressively at one end of a treadmill. His team had used a blade to slice halfway through the animal’s spinal cord, paralyzing its right leg. Now Courtine wanted to prove he could get the monkey walking again. To do it, he and colleagues had installed a recording device beneath its skull, touching its motor cortex, and sutured a pad of flexible electrodes around the animal’s spinal cord, below the injury. A wireless connection joined the two electronic devices. The result: a system that read the monkey’s intention to move and then transmitted it immediately in the form of bursts of electrical stimulation to its spine. Soon enough, the monkey’s right leg began to move. Extend and flex. Extend and flex. It hobbled forward. “The monkey was thinking, and then boom, it was walking,” recalls an exultant Courtine, a professor with Switzerland’s École Polytechnique Fédérale de Lausa...

Science of Noise in Solar System The "Twenty Thousand Hertz" podcast, named after the highest frequency that humans can hear, is a nod to all the audio phenomena we encounter on daily basis. The next episode is scheduled to be released today (April 4). In a recent episode, listeners get to travel from Mercury to Pluto, and learn how sound waves would change on different planets. NASA scientists on the podcast explained that sound would be unable to move through the vacuum of space. But on Venus, for example, the carbon dioxide-rich atmosphere would be so thick that if humans could go to the planet and listen to its storms, they would sound as if they were muffled. On Mars, the Red Planet's atmosphere is thinner than Earth's, so there would be very few molecules for sound to move, the scientists said.  Each 15-minute episode is hosted by Dallas Taylor, a sound designer who has been involved in mixing sound for live news, television shows, sports programming ...

Microprocessor 8085 Q:   Why, in 8085, Opcode fetch have 4 T-States whereas all other machine cycles have only 3 T-States? A:   When an instruction is about to be executed, the first machine cycle that is performed by 8085 microprocessor is the opcode fetch machine cycle. Before knowing the opcode fetch machine cycle, we have to know what is actually the opcode is. There are 256 different instructions in 8085 microprocessor. Some of them are near about similar. To distinguish between all the 256 instructions, there are 256 different hexadecimal operational codes that is stored in the 8085 memory. Let an instruction be MVI A,23H is about to be executed. The hexadecimal code for   MVI A is 3AH and that is fixed inside the 8085 memory. When the instruction as about to be executed, the programmer or the user will have to give input the 3AH data in the program input. When 8085 reads the input from the user, it first checks whether the input code is actually the opcod...

USB under Malware Attack!!! Follow the steps to completely remove malware from your USB drive and also recover the infected files back with NO INFECTION : USB Malware Infection Removal Step 1: Go to "RUN" Step 2: Type "cmd" and press ENTER (Now the Command window is open) Step 3: Go to the USB drive (If your USB derive is I: type C"\I:   and ENTER and the USB Drive                   will be open) Step 4: i) Now to delete autorun, type=>   I:\attrib -h -r -s -a *.*                    ii) To recover files from infection type=>     I:\attrib -H -R -S /S /D I:\ *.*                (The infected files got disinfected and take out from shortcut that is created in USB)