Defently more complex than six Easy pieces and needs concentration while reading.

It would be unfair for me to rate something I can't fully understand. This is full of math and you will need at least some calculus, algebra, trigonometry, and an open mind to get through this. The concepts are fascinating but at times it feels like he meanders. However, he always comes to his point. If you're going to study this then I would say actually go for his original Lectures on Physics, keeping in mind that we have newer understanding now so there will be some errors. Still, for those interested in Physics, this is a treasure.

Feynman olağanüstü etkili bir eğitimciydi. Sayısız ödülleri arasında, 1972'de kazandığı Örsted Öğretim Madalyası'yla özellikle gurur duyardı. Özgün olarak 1963'te basılmış olan Feynman'ın Fizik Dersleri'ni, Scientific American dergisinde bir eleştirmen şöyle betimliyordu: “Çetin, ama besleyici ve leziz. 25 yıl sonra öğretmenler için yol gösterici ve yeni başlayan öğrenciler içinse en iyisi.” Bu kitabın içeriğini oluşturan konular Feynman’ın fizik derslerinin popülerleştirilmiş özetleridir. Altı Kolay Parça’dan farklı olarak bir parça daha fazla matematik içeren Altı Zor Parça, kara deliklerden solucan deliklerine, atom enerjisinden zaman bükülmelerine kadar Einstein göreliliği, simetri ve uzayzaman konularını Feynman’ın usta anlatımıyla sunmaktadır.

“Richard Feynman'ın neden böylesine büyük bir öğretmen olduğunu anlamak için, onun bir bilim insanı olarak olağanüstü niteliğini takdir etmek önemlidir.”
Roger Penrose
“Feynman büyük bir öğretmenden daha büyüktü. Onun yeteneği, onu öğretmenlerin olağanüstü öğretmeni yapıyordu”
David L. Goodstein
“Bu derslerde, Feynman'ın zekâsı ve dehası hakkında duyup durduğunuz her şey ortaya çıkıyor.”
John Horgan Bilimin Sonu’nun yazarı

For all of those who took introductory college level physics courses once upon a time, and wish to know more about the development of the science during the 20th century, this is a very authentic introduction. A basic understanding of calculus is important, even if it was acquired some years ago and partially forgotten, to comprehend the various mathematical explanations that go along with any serious study of physics. If that doesn't scare you, or if you have the will and the patience to give it a try anyway, Feynmann's presentation is imaginative, entertaining, and for the most part accessible.
Part of his original "Lectures on Physics," written and delivered for an audience of undergraduate college students, this shorter work covers some of the most important ideas and discoveries of modern physics including Einstein's special theory of relativity, space time, and gravitational equivalence. Persistent references to other parts of the original work sometimes leave information wanting, but generally the concepts covered are well explained in a creative but direct manner intended to shed light on difficult ideas without being convoluted or contradictory. Despite it's small size, not many would consider it light reading, however, if one is genuinely looking to learn something about the wonders and intricacies of our universe and how it operates, Feynmann remains an excellent teacher.

Writing this review many months after reading the book I find I can't remember how well it worked for me. The book has the same style and accessibility as its predecessor but the maths can be difficult to follow. I think I need to read it again!

I will always love reading Feynman!!!

This book is good for those who want to know more about relativity

The principle of Conservation of Momentum, to me, is the most stunning nature of physics, and I guess the way Feynman understands and explains physical principles is the next stunning nature of physics!

Having a high school knowledge of physics and mathematics can give you a delightful time through the pages of this book and give you the chance to cherish understanding Einstein’s relativity in six-not-so-easy pieces.

What a phenomenal exposition of the mysteries of science..

This book is supposed to be a follow up of Feynman’s other book, Six Easy Pieces, which was sort of an introduction to physics. Here you will find a slightly more demanding book, as you’ll need some mathematics under your belt (pre-calculus should be fine). As the title says, the objective of this book is to introduce relativity, and Feynman does it in a superb and compelling way.

Special relativity, in particular, gets the most attention. Feynman uses mathematics, analogies and experiments in order to provide an account of special relativity. The relations between relativistic energy and momentum are greatly described in a full chapter. I found it particularly interesting to get a closer look at the Michelson-Morley experiment and how it showed physicists that something was wrong with the existing idea at the time that space was filled with ether. As a bonus, Feynman not only speaks about symmetry in the context of relativity, but later on also relates it to parity, antimatter and symmetry breaking situations.

General relativity is only accounted for in the last chapter of the six total chapters. Feynman does a great job in showing what curved space really means, ultimately getting to the relation between excess radius and mass. The principle of equivalence is very well described, with an experiment involving clocks in a gravitational field being used as an example and equations to complement. Unfortunately, most of general relativity and, as a consequence, Einstein’s field equation and equation of motion are not described mathematically, but only through words. As Feynman says, these are difficult to describe without a higher level of mathematics, usually only taught in later years of physics programmes.

Besides being one of the greatest physicists of his generation, Richard Feynman was also a fantastic educator of science. It’s often uncommon to find scientists with both of these characteristics, as they don’t usually go hand in hand. To anyone who has never watched any of his interviews or lectures, I vividly recommend doing so. Even before reading any of his books. To understand the reasoning and wittiness behind his words it’s essential to imagine Feynman speaking with his New York accent, and his characteristic humor and directness.

Feynman provides a compelling account of relativity. As usual, his clarity is evident, throwing away unnecessary complexities. Featuring experiments, both with and without apparatuses, and then demonstrating the results with equations, Feynman’s style just improves upon everything else. This book is a clear evidence of why the Feynman Lectures became so famous.

Caltech has kindly provided the Feynman Lectures online for free, which you can access here: https://www.feynmanlectures.caltech.edu

I learned that there are somethings I cannot grasp and sometimes these things are not understandable by most people. I am one of them when it comes to this book. However, the main thing is that I learned that this man was unique in that he was brilliant and could teach also. A most commendable combination in any person....plus he had a sense of humour! I honor the man even though I did not understand most of the book.

recensione che scrivo per ricordarmi di non sopravvalutare più la mia voglia di impegnarmi nella lettura di un libro