Thursday, February 18, 2021

MEMORY DEVICES AND THEIR TYPES

MEMORY DEVICE:
It refers to a device that is used to store information for use in a computer or related computer hardware device. It is like human brain which stores memory's.




      TYPES OF MEMORY DEVICES:



1. PRIMARY MEMORY: It is the main memory of computer system accessing data from. Primary memory is faster because it is a internal memory of computer.
(a). RAM(Random Access Memory): It is the main memory of computer also known as temprory memory or cash memory. It is a volatile memory.
(b). ROM(Read Only Memory): It is a permanent & non volatile memory. The information of ROM is decided by computer manufacturer.


2. SECONDARY MEMORY: Secondary memory is a memory where program & instructions can be kept on a long time basis as it is a non volatile memory but slower than primary memory.


HOW YOUTUBERS MAKE MONEY

Hey! , Today we are going to discuss that how youtubers makes money. And here are some ways.


1. Google Adsense: After getting monetization that youtuber can show ads from Google Adsense and get payment on the basis of watch time and click.


2. Sponsored videos: In Google Adsense, Google cut a huge margin so sponsors started direct contacting youtubers and pay to tell people about their product personally at rate according to performance of that channel on YouTube.



3. Membership: popular youtubers make their group on YouTube where members can do live video, chat and many things at a price set by youtuber.



4. Merchandise: In this youtubers can sell things having promotion of there channel or things which youtubers want like T-shirts.



5. Affiliate marketing: Youtubers can sell any product by direct link they from any online store and if someone shop using their refferal link they will get commission.



6. Social media marketing: as they get very famous though there their youtube channel, they get social media fame also due to their fan following. On their page sometime they promote sponcered things and get money from sponcers.
I hope this would be helpful for you. If you have any question then please ask in the comment section : )

Wednesday, June 10, 2020

CYCLONE

Today we are going to know about cyclones like What they are, How they form & Why they are so destructive. Let's start
What is Cyclone 🌀 ???
 cyclone is a large scale air mass that rotates around a strong center of low atmospheric pressure. Cyclones are characterized by inward spiraling winds that rotate about a zone of low pressure. The largest low-pressure systems are polar vortices and extratropical cyclones of the largest scale.



To  understand the formation of a cyclone first we have to know about tropical region, winds movement & the most important coriolis force.

Tropical Region 
These are the regions which lies between equator & Tropic of Cancer in northern hemisphere and between equator & Tropic of Capricorn in southern hemisphere. Since Tropical Region is longitudinally at the centre of earth therefore it hit by the straight dun rays as compared to other regions where sun rays hit slantly. So, due to the straight sun rays oceans more heated in Tropical Region.



Wind Movement
Wind moves from high pressure area to low pressure area. Low pressure area are created due to heat. As I said earlier that tropical region is much heated than other regions therefore tropical region become low pressure area and polar regions become area of high pressure. Since wind moves from high pressure to low pressure, wind starts moving from polar region to tropical region.


Coriolis Force
As we see sun rise from East and drop in West direction because earth moves from East to West direction and due to this movement of earth a force develops called coriolis force. Since earth is a sphere and it is much thicker at the equator than the poles i.e it have more speed at the equator. So if  anything coming from poles to equator get deflected in the East direction due to the Coriolis Force. Due to the coriolis force winds in northern hemisphere turn right & winds in southern hemisphere turn left.


How they form?
When we look at a cyclone we find that always there is a center of cyclone which have low pressure as we know that winds moves from high to low pressure area we come to note that cyclone consists of cool air coming from high pressure area which surrounded by the central low pressure area this region is called eye of the storm or center of storm.

Let us consider a spot in the tropical region which is worm so air at this spot become warm and go up to fill the void created by this cool air from surrounding comes and the air that go up earlier cools due to the reason that air cool up as altitude goes up. Now the cool air keeps getting attracted towards the centre because that's where the warm low pressure zone is while moving towards the centre the cool air just getting deflected. Now thats create a spin in a anti clockwise direction in the southern hemisphere the coriolis effect moves air to the left opposite to what happened in the north hemisphere as a result the spinning of cyclone is in clockwise direction in southern hemisphere.



Why they are so destructive ?

Primary Hazards:

Primary hazards include strong winds, heavy rains, and storms. The sea level rises abnormally near the coasts as a result of which the low-lying areas near the coastal regions get submerged, drowning humans, their live stocks, and their inhabitations, destroying vegetation and soil fertility. Very strong winds damage the houses, trees, communication systems etc. resulting in huge loss of life and property.


Secondary Hazards:

Secondary hazards include floods, fire, and freshwater flooding. Heavy and prolonged rains cause floods in rivers which cause submergence of the nearby inhabited regions, erosion of valuable farming lands and destruction of buildings. Strong winds in forest regions result in forest fires which spread with the intensity of cyclonic winds.


If you have any question then please ask in the comment section.








Monday, June 8, 2020

Best books for class 12

Now a days, board students are very anxious to know that which books can help them to score 90+ marks in exams. So, today we have a list of books recommended by previous year toppers & our specialists. Lets explore these books which sets a benchmark for various exams and trusted by a lot of students since decades.

PHYSICS

1. Pradeep's fundamental physics :

The language used for this book is simple and easy to understand making it convenient for students to grasp the subject and memorize. Each Chapter contains questions and answers at the end to promote self-evaluation and practice at home. It has been authored by K.L. Gomber and K.L. Gogia who have made the concepts of Physics easier for the school going students.

2. Xam idea :


Each Chapter is summarised in ‘Basic Concepts’.Important NCERT Textbook and NCERT Exemplar questions have been incorporated. Previous Years’ Questions have been added under different sections according to their marks.


3. Arihant sample papers :
Solved papers help you to provide the best practice material when it comes to scoring well in the exam. It helps in realising the weak points, silly mistakes and focuses on the strong points that enhances the level of preparation of the exam.

CHEMISTRY

1. NCERT :

The major advantage behind using the NCERT Books for exam preparation is it focuses highly on the fundamentals of each and every subject according to the latest CBSE syllabus which helps aspirants clear the basic concepts of each subject. Thus, support students to clarify all their queries or doubts very easily.

2. Xam idea :
Periodic Tests and Important Mathematical Activities along with related Viva-Voce have been provided in the book for Internal Assessment.

3. Arihant sample papers :
 “I Succeed 15 Sample Question papers for Class 12 Chemistry” is prepared exactly according to the CBSE exam pattern & latest syllabus with solutions according to CBSE marketing Scheme.
MATHEMATICS

1. NCERT :
Clears all fundamental concepts NCERT books are not only sufficient to cover the entire CBSE syllabus but are also enough to cover all the basics and fundamentals on all topics in simple and easy language. This helps the students to make their concepts crystal clear.

2. R.D.SHARMA :

This book will be of great help if one is looking to crack entrance examinations that are offered by prestigious academies for courses in which one can enrol themselves after their Class 12 Board examinations.

3. Xam idea :


ImportantNCERT Textbook and NCERT Exemplar questions have been incorporated. Previous Years’ Questions have been added under different sections according to their marks. Objective Type Questions have been included as per new CBSE guidelines. These include Multiple Choice Questions, Assertion-Reason Type Questions, True-False, Match the Columns and Fill in the Blanks.

4. Arihant sample papers :
The fast Track Revision is given in the beginning of the book which gives the quick revision of the syllabus before attempting the full length question, the Sample Papers are grouped into three stages; I, II, III that provides the step-by-step upgradation that enhances of the performance of the students gradually. 

I think this books will help you to achieve your dreams and you score 90+ marks in your exams. If you have any question then feel free to ask in comment section.

Saturday, June 6, 2020

HOW TO TIME TRAVEL


We have many ways to time travel but none of them is proved yet

  1. Traveling with the speed of light: According to the theory of relativity when an object travel with the speed of light, time passes slower for him than others.
  2. Huge gravity: when gravity become huge like of black hole, light also can't escape from its gravity and time become slower for an object approaching towards that huge gravity area.
  3. Multiverse: according to Quantum Mechanics multiverses exists. There is not a single universe where time changes but there are multiverses and in different universes different timelines exists.
  4. Tipler cylinder: according to american physicist Frank Tipler, if we move around a cylinder of infinite length having electric and magnetic fields then we can go in future or past.
  5. Wormholes: from centuries peoples thought that wormholes are roads built in higher dimensions that connects time and space.
  6. God particle: on 14 March 2013, scientists discover Higgs boson and they believed that this particle can do time travel.
  7. Cracks in universe: astronomers found that there are cracks in the universe wich can give birth to time loops.
  8. Black Holes: due to huge gravity of black holes physicists think that the trough it we can do time travel.

For more details you can read these free books:

https://yeppbuzz.blogspot.com/2020/04/top-physics-books-for-general-readers-1.html?m=1

FALSE MEMORY



When I was a  child in school i never celebrate my birthday in my school because most of the time my birthday comes on holidays. One of my schoolmates name Sam and he was my classmate till the graduation. One day during lunch I said to Sam that I am a unlucky guy because I never celebrate my birthday in school and he replied that '' You celebrated your birthday when we were in 7th standard , you weared black clothes also " his that reply shoked me completely and I thought that how it is possible it was my birthday and why I don't remember that? And why I weared black clothes? That was not a funeral it was a birthday. I asked about that day to others they also don't know.


After a great reserch on internet I come to a point that it may be Mandela effect or Multiverse. But that theory which I thought was most accurate and it was FALSE MEMORY.
Sometimes people have memories which are not of their own. Let's understand how these memories form and why. From centuries psychologists try to understand it. In  1974, Elizabeth and John Palmer conducted a study to investigate the effects of language on the development of false memory. The experiment involved two separate studies

In the first test, 45 participants were randomly assigned to watch different videos of a car accident, in which separate videos had shown collisions at 20 mph (32 km/h), 30 mph (48 km/h) and 40 mph (64 km/h). Afterwards, participants filled out a survey. The survey asked the question, "About how fast were the cars going when they smashed into each other?" The question always asked the same thing, except the verb used to describe the collision varied. Rather than "smashed", other verbs used included "bumped", "collided", "hit", or "contacted". Participants estimated collisions of all speeds to average between 35 mph (56 km/h) to just below 40 mph (64 km/h). If actual speed was the main factor in estimate, it could be assumed that participants would have lower estimates for lower speed collisions. Instead, the word being used to describe the collision seemed to better predict the estimate in speed rather than the speed itself.

The second experiment also showed participants videos of a car accident, but the phrasing of the follow-up questionnaire was critical in participant responses. 150 participants were randomly assigned to three conditions. Those in the first condition were asked the same question as the first study using the verb "smashed". The second group was asked the same question as the first study, replacing "smashed" with "hit". The final group was not asked about the speed of the crashed cars. The researchers then asked the participants if they had seen any broken glass, knowing that there was no broken glass in the video. The responses to this question had shown that the difference between whether broken glass was recalled or not heavily depended on the verb used. A larger sum of participants in the "smashed" group declared that there was broken glass.

In this study, the first point brought up in discussion is that the words used to phrase a question can heavily influence the response given. Second, the study indicates that the phrasing of a question can give expectations to previously ignored details, and therefore, a misconstruction of our memory recall. This indication supports false memory as an existing phenomenon.

Replications in different contexts (such as hockey games instead of car crashes) have shown that different scenarios require different framing effects to produce differing memories.

Conclusion: False memory is a phenomenon where a person recalls something that did not happen or recalls it differently from the way it actually happened. Suggestibility, activation of associated information, the incorporation of misinformation and source misattribution have been suggested to be several mechanisms underlying a variety of types of false memory phenomena.

False memories are a component of false memory syndrome (FMS).

If you have have question feel free to ask in the comments section.






Wednesday, June 3, 2020

FUTURE OF HUMANITY

FUTURE OF HUMANITY  




Talking about the future of humanity fantasies all of us because all of us want to know that what will be the next level of humanity. Many a time when we think about our ansisters who live into a cave then we have a curiosity to know that will be our future.
Actually it is very difficult to make predictions but after analysing a lot of things we can make a prediction which can be accurate a lot. So to predict the future we have to understand how our ansisters of 1900 think of us, they will think we are wizards or sorcerers who have magic mirrors called mobile phones, flying carpets called jet airplanes.
So, i think if we look our descendant of 2100 they will be look like hindu gods like Hanuman who is immortal because i think in future the genetic engineering will be so adwance that we can take out the age causing geans out of our DNA anf became immortal.
Like Sanjay of Mahabharata, we will have more advanced drones who don't need any type of maintenance or they be self healing as today we are at the point where Lamborghini has created the world's first self-healing sports car. The Terzo Millennio, which translates as third millennium in Italian, has the ability to detect and repair cracks in its body work.
I think that the industries which will be the biggest in 2100 are mainly ARTIFICIAL INTELLIGENCE, NENO TECHNOLOGY, BIO TECHNOLOGY.



Ofcourse, now most of you have a question that will one day A.I became dangerous for humanity? Yes, but only if they become self aware. I think until they become self aware they are like workers for us. Also you have a question that will it reduce employment? No, because A.I reduce employment in one sector but increase employment in another sector. For example, when automated teller machine (A.T.M) was introduced people thought it will reduce employment in banking sector. But some times predictions also fail for example when internet was first introduced at CERN (the European Organization for Nuclear Research) so that scientists from all over the world can share their reserch and public thought that one day internet become a place for high culture art and society but today we all know that around 4% of internet if only filled by pornography.

Thursday, April 23, 2020

POPULAR TIME TRAVEL MOVIES

POPULAR TIME TRAVEL MOVIES

1. PRESENTATION



For his final assignment, a top temporal agent must pursue the one criminal that has eluded him throughout time. The chase turns into a unique, surprising and mind-bending exploration of love, fate, identity and time travel taboos.


2. INTERSTELLAR


A team of explorers travel through a wormhole in space in an attempt to ensure humanity's survival.


3. PROJECT ALMANAC


A group of teens discover secret plans of a time machine, and construct one. However, things start to get out of control.

4. EDGE OF TOMORROW


A soldier fighting aliens gets to relive the same day over and over again, the day restarting every time he dies.

5. LOOPER


In 2074, when the mob wants to get rid of someone, the target is sent into the past, where a hired gun awaits - someone like Joe - who one day learns the mob wants to 'close the loop' by sending back Joe's future self for assassination.


6. MEN IN BLACK 3


Agent J travels in time to M.I.B.'s early days in 1969 to stop an alien from assassinating his friend Agent K and changing history.

7. PRIMER


Four friends/fledgling entrepreneurs, knowing that there's something bigger and more innovative than the different error-checking devices they've built, wrestle over their new invention.


8. BACK TO THE FUTURE


Marty McFly, a 17-year-old high school student, is accidentally sent thirty years into the past in a time-traveling DeLorean invented by his close friend, the eccentric scientist Doc Brown.


9. THE TIME MACHINE


Hoping to alter the events of the past, a 19th century inventor instead travels 800,000 years into the future, where he finds humankind divided into two warring races.


10. TIME AFTER TIME



H.G. Wells pursues Jack the Ripper to the 20th Century when the serial murderer uses the future writer's time machine to escape his time period.

You can watch all these movies for free on

Wednesday, April 22, 2020

PHYSICS BOOKS FOR UNDER GRAGUATE STUDENTS

PHYSICS BOOKS FOR UNDER GRAGUATE STUDENTS

1. Feynman lactures on physics

Timeless and collectible, The Feynman Lectures on Physics bundle are essential reading, not just for students of Physics, but for anyone seeking an insightful introduction to the field from the inimitable Richard P. Feynman.These carefully selected books will enable science graduates to master their subject and will prove to be ideal companions in their academic journeys.



2. Mathematical methods for physicists - Arfken

One of the main features of the book is that there are ample examples illustrating each concept in the book. The writer's emphasis has been on improving the problem solving capability of the students. Complex concepts have been explained with the help of detailed and labelled diagrams. The book also contains proof of some important theorems which are used in physics. Some new topics have also been added to the seventh edition of the book. for example, a new chapter on the green's function, thorough explanation on contour integration, explanation of orthogonal polynomials and detailed discussion on partial differential equations are included.




3. Introduction to Machenics - Kepler & Kolenkou

An Introduction To Mechanics, by Robert J. Kolenkow and Daniel Kleppner, is a comprehensive elaboration of mechanics in the field of Physics. This book is primarily for the students of an undergraduate course in Physics. In this book, the basic concepts related to the mechanics of Physics are elaborated. The presentation makes it easy to understand from the standpoint of the student who has a general knowledge about calculus and fundamental mathematics.



4. Introduction to Electrodynamics - D.J.Griffth

This book is known for its clear, concise, and accessible coverage of standard topics in a logical and pedagogically sound order. The highly polished Fourth Edition features a clear, accessible treatment of the fundamentals of electromagnetic theory, providing a sound platform for the exploration of related applications (ac circuits, antennas, transmission lines, plasmas, optics, etc.). Its lean and focused approach employs numerous new examples and problems.




5. Introduction to Quantum Mechanics - D.J.Griffth

Changes and additions to the new edition of this classic textbook include a new chapter on symmetries, new problems and examples, improved explanations, more numerical problems to be worked on a computer, new applications to solid state physics, and consolidated treatment of time-dependent potentials. Provides clear and accessible explanations of the foundations of quantum mechanics, using an attractive and informal style It is thorough, with an appropriate amount of mathematical rigor and a good variety of examples and problems Students emerge with a confident understanding of what the theory says and how to apply it, a solid foundation for more advanced work, and an appreciation for one of the greatest products of the human mind.




6. Heat & Thermodynamics - Zeemansky

The new volume of Heat and Thermodynamics endeavours to maintain the original classicalflavour while at the same time ensures that novel advancements in the subject are also brought tothe forefront. This textbook is a bridge between thermal physics and the more challenging world oftime- dependent non-equilibrium physics




7. Modern Physics - Arthur Beiser

The balance in this book leans more toward ideas than toward experimental methods and practical applications, because the beginning students are better served by a conceptual framework rather than by a mass of details. To help build a conceptual framework, a plethora of solved and unsolved problems, varying from simple to complex, have been incorporated.




8. Introduction to Special Relativity - Robert Resnick

This book gives an excellent introduction to the theory of special relativity. Professor Resnick presents a fundamental and unified development of the subject with unusually clear discussions of the aspects that usually trouble beginners. He includes, for example, a section on the common sense of relativity. His presentation is lively and interspersed with historical, philosophical and special topics (such as the twin paradox) that will arouse and hold the reader's interest. You'll find many unique features that help you grasp the material, such as worked-out examples, summary tables, thought questions and a wealth of excellent problems. The emphasis throughout the book is physical.





9. Introduction to Elementry Particles - D.J.Griffth

This is the first quantitative treatment of elementary particle theory that is accessible to undergraduates. Using a lively, informal writing style, the author strikes a balance between quantitative rigor and intuitive understanding. The first chapter provides a detailed historical introduction to the subject. Subsequent chapters offer a consistent and modern presentation, covering the quark model, Feynman diagrams, quantum electrodynamics, and gauge theories. A clear introduction to the Feynman rules, using a simple model, helps readers learn the calculational techniques without the complications of spin. And an accessible treatment of QED shows how to evaluate tree-level diagrams. Contains an abundance of worked examples and many end-of-chapter problems.




10. Revolution in 20 th Century Physics - D.J.Griffth

The conceptual changes brought by modern physics are important, radical and fascinating, yet they are only vaguely understood by people working outside the field. Exploring the four pillars of modern physics – relativity, quantum mechanics, elementary particles and cosmology – this clear and lively account will interest anyone who has wondered what Einstein, Bohr, Schrödinger and Heisenberg were really talking about. The book discusses quarks and leptons, antiparticles and Feynman diagrams, curved space-time, the Big Bang and the expanding Universe. Suitable for undergraduate students in non-science as well as science subjects, it uses problems and worked examples to help readers develop an understanding of what recent advances in physics actually mean.



If you have any question then feel free to ask in the comment section.