There are many free textbooks here on obooko, so let’s go through the main topics you find with science books and engineering books in ebook download
Astronomy and astrophysics is concerned with space and the planets. Learn about possibilities of life on Mars or the details of the galaxies and what stars are made of. Stephen Hawking is a well known author in this sub genre with ground-breaking books on black holes and space
Building and construction
is a broad topic in itself and covers all areas such as buildings, carpentry, electrical, masonry, plumbing, heating and cooling, health & safety. Also the more managerial side of things like estimating
will cover topics such as analytics of compounds and elements, clinical chemistry, food sciences, organic chemistry and theoretical chemistry. You can also find books on how to use complex technical equipment such as spectroscopy and spectrum analysis.
A growing area where technical expertise is required is in communication
. Telecommunications and telephone systems are the backbone of the networks we rely on. Television and video is a fast moving high tech area with texts in this category.
Earth science books and ebooks cover classic geography geology but this genre also includes many other sub categories and specific niches. For example, hydrology sciences, oceanography, meteorology, palaeontology and geophysics.
is another scientific category with a lot of very specific niches. Clearly another important topic in day to day to life. You can pick up free textbooks on integrated circuits, logic, fibre optics, semiconductors, superconductors and many more.
books cover a wide range of topics and there are too many to list all of them out. Some key areas are the classics of mechanical engineering, civil engineering, manufacturing, automotive and environmental. You will also find specifics in areas like Japanese techniques, nuclear, nanotechnology and a whole host of other options whatever your interest or career.
is quite literally everywhere and important in all sciences. Mathematics books will cover a wide range of specifics, too many to mention here. But look for applied mathematics, algebra, probability, statistics, logic, trigonometry and geometry. You might also be interested in the history of mathematics and how it has developed over time and how we discovered new things.
is another science
category with a lot of very specific niches. Clearly another important topic in day to day to life. You can pick up books on integrated circuits, logic, fibre optics, semiconductors, superconductors and many more.
is also well represented in the science books
section and will cover interesting topics like gravity, magnetism, mechanics, microwaves, aerodynamics, radiation and relativity. There are many more physics books on many more topics.
Finally, there are e-books on general science history and the people that have been at the forefront of science making new discoveries and applying their findings to real world problems.