Science is observing and understanding; engineering is designing and implementing. The two complement one another. Technology, on the other hand, is one of the many consequences of both, therefore is not as fundamental as science and engineering.
Science means concept, phenomenon and logic. Engineering means design and construction. Whereas, technology means implementation of scintific concepts in to real world devices with the help of engineering.
Science is the study of the natural world as it is, Engineering is creating new tools, devices, and processes based on scientific knowledge, and Technology is the sum total of all the engineered tools, devices and processes available.
I suppose this depends how the terms are being used. For example, some will lump everything together, as "technology."
However simplistically, I would say that science is the study of how our natural universe works, engineering is putting science into practical use, and technology is the physical application of engineering solutions.
These definitions are from Google search and are the best from my point of view.
Science: "
the intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment."
Engineering is "the branch of science and technology concerned with the design, building, and use of engines, machines, and structures."
Technology
" the application of scientific knowledge for practical purposes, especially in industry."
"SciEnce vs engineering vs technology ??? What is basic difference? " You can't compare an apple and an orange.
" What is role of 3rd PillAr?" What you are asking about?
" Is (does?) any tetrahedron exist" From Google "tetrahedron (plural: tetrahedra or tetrahedrons), also known as a triangular pyramid" I've seen many pyramids.
The last but not the least. @Bhaskar Bhatt, have you heard about "a check spelling?"
There is no responsibility of "sci.& Tech. & Engg." themselves towards our society. The people who are involved in sci.& Tech. & Engg. are responsible for what they are doing. My view on tetrahedron is the same as on pyramid.
I suppose, science is a logical system for cognition of the surrounding reality, engineering is an implementation-oriented self-developing science-based knowledge and technology is a practically adjusting list of most effective manufacturing operations.
I would suggest two principal roles of a technology, namely: 1) to produce goods useful for people; 2) to find contradictions in human understanding of reality and - by this way - to stimulate a science.
A tetrahedron? I would say, that it’s fourth point is a cognition itself. People need not only goods, but a knowledge about the world. That’s why the science cannot be motivated by a materialistic needs only. Thus, a cognition is a fourth pillar.