PK Tech

Internet Exploring Its Impact and Applications What is Internet? The Internet is a vast network that connects computers all over the world. Through the Internet, people can share information and communicate from anywhere with an Internet connection. The Internet is a global network of billions of computers and other electronic devices. History of Internet In the late 1960s, with the creation of the Advanced Research Projects Agency Network, which was funded by the U.S. Department of Defense, the “first workable prototype of the Internet” was born. The internet began as ARPANET, an academic research network that was funded by the military's Advanced Research Projects Agency (ARPA, now DARPA). Basic Services of Internet Electronic Mail FTP ( File Transfer Protocol ) Telnet The world wide web Electronic Mail Electronic mail (e-mail) is a computer-based application for the exchange of messages between users. A worldwide e-mail network allows people to exchange e-mail messages very quic...

    Space Tourism Introduction to Space Tourism Space tourism refers to commercial space travel where civilians, not professional astronauts, venture into space. It is a new industry offering individuals the opportunity to experience spaceflight. Although still in its early stages, the idea is gaining momentum with the support of companies like SpaceX, Blue Origin, and Virgin Galactic. The industry includes suborbital, orbital, and potentially lunar or interplanetary travel. Types of Space Tourism Suborbital Tourism Orbital Tourism Lunar/Interplanetary Tourism Cost of Space Tourism A suborbital trip with Virgin Galactic costs around $450,000. An orbital trip through SpaceX or Axiom Space can cost tens of millions. As technology improves and competition increases, prices are expected to decrease, potentially opening space travel to more people. Dennis Tito – The First Space Tourist Dennis Tito is widely recognized as the first space tourist. He became the first ...

Top 100 PowerPoint Presentation Topics for Students and Professionals (2025) Looking for the perfect PPT topic for your next presentation? Whether you're a student preparing for a seminar or a professional aiming to impress in a meeting, here’s a curated list of 100 topics across various categories. 🎓 Education & Learning Topics Importance of Online Learning in Modern Education The Future of E-learning NEP 2020 – Key Highlights and Impact Role of AI in Education Smart Classrooms and EdTech Tools STEM vs. STEAM Education Impact of Social Media on Students Time Management for Students Exam Stress and How to Beat It How to Prepare for Competitive Exams 💼 Business & Management Topics Digital Marketing Trends 2025 Importance of Branding in Business Startups vs. Corporates: Pros and Cons Leadership vs. Management Business Ethics and Corporate Social Responsibility Customer Relationship Management (CRM) How to Write a Business Plan Entrepreneurship in ...

 Light Pollution Introduction Light is also called photo pollution or luminescence pollution refers to a brightening of night sky due to scattering of artificial light by gaseous molecule and dust particle in the air. Light pollution Sky glow Glare Light trespass Light clutter Sky glow Most of the times the lightning are not endowed with adequate shielding provisions as a result the light is reflected by the object it illuminates and spills away into the sky. In the atmosphere it is reflected causing orange color sky glow refers to the glow effect that can be seen over populated areas. Light trespass Light may go across property lines and illuminates some one else premises. This condition is called light trespass. This is not only a nuisance bus also a security risk. A common light trespass problem occur when a beam if light from one house enters a windows of another house. This may lead to sleep deprivaion or blocking of a evening view. Glare The condition of glare result when m...

 Advantage & Disadvantage  Computer Computer  C-Common O-Operating M-Machine P-Particularly U-Used For T-Training  E-Education R-Research What is computer ? Computer is an electronic device Which takes input from the user and give the output after processing. Characteristics Speed Accuracy  Diligence  Versatility Reliable  Large storage capacity  ADVANTAGES E-mail Allow peoples across the world to communicate with each other, by using E-mail. Connection with Internet With the internet we can communication with people faster throughout the globe. We can send  email, hold voice & video calls, use IM service. Also allows for instant sharing of files, we can also connect with our family, friends, and with our relatives. Backup & Recovery User can backup copies of work easily, without having to rewrite everything. And at any time it can be recovery Education  Allows creation of a wider variety of individualized and differentiated ...

 Human Capital Capital Cash or goods used to generate income either by investing in a business or a different income property. The money, property, and other valuables which collectively represent the wealth of an individual or business. Human Capital Human capital is the attributes of a person that are productive in some economic context. Human capital is the stock of competencies, knowledge, social and personality attributes, including creativity, embodied in the ability to perform labor so as to produce economics value. Human Capital Development Human capital development is the act of increasing the productive qualities of labor forces by providing more education and by increasing skill, health and nutrition level. If the people of a country are well educated, well nourished, skillied and healthy that will be said to have more human capital. Types of Human Capital Biological capital Knowledge capital Track record capital Social capital Factors of Human Capital Development Import...

Road Safety  What is road Safety? Road safety refers to methods and measures for reducing the risk of a person using the road network for being killed or seriously injured. The users of a road include pedestrians, cyclists,  motorists, etc. Do you know? More than 1.2 million people are killed in road accidents, world wide, every year. One child is killed in Road Accidents, every three minutes in the World. 3-4% of Gross National Product is lost in Road accidents. Road Accidents Photos Why these accidents are happening? Over Speeding Drunken Driving Distraction to Driver Red light jumping Avoiding Safety Gears like Helmets Unawareness Of road rules, regulation and signs Prevention of road accidents TV and Other media should be effectively used for public safety awareness. Major accidents and accident prone areas should be scientifically analyzed. License of those who make accidents should be cancelled. Zebra crossing should be provided for pedestrians for safe road crossing...

 Solar System Sun  Located  93,000,000 from the earth  Closest star to earth   At least 4.5 billion years old   Has a surface temperature of 10,000 degrees and a center temperature of 27,000,000 degrees Fahrenheit Moon Bigger than pluto Only object in the solar system visited by humans A lunar months is 29.35 days; 1 new moon to the next. The moon’s gravitational pull on earth is the main cause of the ocean’s tide. Asteroids   The asteroids belt is the space between mars and jupiter It contains irregularly shaped chunks of debris called asteroids Asteroids made of rock and metal. Mostly nickel and iron. Planets  Mercury  Venus  Earth   Mars  Jupiter  Saturn   Uranus   Neptune  Mercury Closest to the sun Smallest planet Rotates once every 59 earth days One day on Mercury lasts 176 earth days Very dry, hot and almost airless Venus   Second closest planet to the sun Brightes...