Alok Kumar

Objects that contain additional metadata to identify and categorize data are called dimensional objects. Zero Dimensions: A point has zero dimensions. There's no length, height, width, or volume. Its only property is its location. You could have a collection of points, such as the endpoints of a line or the corners of a square, but it would still be a zero-dimensional object. One Dimension: Once you connect two points, you get a one-dimensional object — a line segment. A line segment has one dimension: length. Two Dimensions: A flat plane or shape is two-dimensional. Its two dimensions are length and width. Polygons, such as squares and rectangles, are examples of two-dimensional objects. Two-dimensional objects can be rotated in a plane. Three Dimensions: The objects around you — the ones you can pick up, touch, and move around — are three-dimensional. These shapes have a third dimension: depth. Cubes, prisms, pyramids, spheres, cones, and cylinders are all examples of three-dimensional objects. Three-dimensional objects can be rotated in space. Four Dimensions: What?! Just when you think you've got it all figured out, scientists start adding more dimensions. Most physicists — including Einstein — describe the fourth dimension as time. This fourth dimension is essential when studying an event. For example, imagine you are going to a party at the corner of 7th Avenue and 2nd Street on the 4th floor. You could abbreviate that location with the coordinates 7, 2, 4 — representing the three dimensions of space. But in order to describe an event, you need to add a time  or fourth coordinate. If the party is at 3 pm, your coordinates for the event would be 7, 2, 4, 3. So time is an essential dimension for discussing events.

My son is an autistic child. He has good learning capabilities and is now in 5th standard in Euro school. but from few days he is not taking interest in his studies and also not performing well at school exams. even he learns everything but dont give the right answers at the time of exam. What to do? I need a tutor for him who can come and teach him at home only.

Home tutor can be a best option for your son ,but you can do one thing you start talking to your son but not abut study abut his friends ,teachers and what he done today in school as friend . and find a teacher like who understand your son and teach him like fun . And dont make it a big problem for your son ,he will definitely do nice god bless to your son