Customer Reviews for

Why Does E=mc2?: (And Why Should We Care?)

Average Rating 4
( 61 )
Rating Distribution

5 Star

(35)

4 Star

(11)

3 Star

(7)

2 Star

(4)

1 Star

(4)

Your Rating:

Your Name: Create a Pen Name or

Barnes & Noble.com Review Rules

Our reader reviews allow you to share your comments on titles you liked, or didn't, with others. By submitting an online review, you are representing to Barnes & Noble.com that all information contained in your review is original and accurate in all respects, and that the submission of such content by you and the posting of such content by Barnes & Noble.com does not and will not violate the rights of any third party. Please follow the rules below to help ensure that your review can be posted.

Reviews by Our Customers Under the Age of 13

We highly value and respect everyone's opinion concerning the titles we offer. However, we cannot allow persons under the age of 13 to have accounts at BN.com or to post customer reviews. Please see our Terms of Use for more details.

What to exclude from your review:

Please do not write about reviews, commentary, or information posted on the product page. If you see any errors in the information on the product page, please send us an email.

Reviews should not contain any of the following:

  • - HTML tags, profanity, obscenities, vulgarities, or comments that defame anyone
  • - Time-sensitive information such as tour dates, signings, lectures, etc.
  • - Single-word reviews. Other people will read your review to discover why you liked or didn't like the title. Be descriptive.
  • - Comments focusing on the author or that may ruin the ending for others
  • - Phone numbers, addresses, URLs
  • - Pricing and availability information or alternative ordering information
  • - Advertisements or commercial solicitation

Reminder:

  • - By submitting a review, you grant to Barnes & Noble.com and its sublicensees the royalty-free, perpetual, irrevocable right and license to use the review in accordance with the Barnes & Noble.com Terms of Use.
  • - Barnes & Noble.com reserves the right not to post any review -- particularly those that do not follow the terms and conditions of these Rules. Barnes & Noble.com also reserves the right to remove any review at any time without notice.
  • - See Terms of Use for other conditions and disclaimers.
Search for Products You'd Like to Recommend

Recommend other products that relate to your review. Just search for them below and share!

Create a Pen Name

Your Pen Name is your unique identity on BN.com. It will appear on the reviews you write and other website activities. Your Pen Name cannot be edited, changed or deleted once submitted.

 
Your Pen Name can be any combination of alphanumeric characters (plus - and _), and must be at least two characters long.

Continue Anonymously

Most Helpful Favorable Review

3 out of 6 people found this review helpful.

Great book but...

I thought the book was great. It really made you think about stuff that maybe a "regular guy" just doesn't get around to thinking about during his typical craziness that is life. I try to read as much science/philosophy books as I can and the chapter about life was pa...
I thought the book was great. It really made you think about stuff that maybe a "regular guy" just doesn't get around to thinking about during his typical craziness that is life. I try to read as much science/philosophy books as I can and the chapter about life was particularly fascinating.

The only thing about the book that I must say really against it (the "but" part of my headline) is that I think it might come across slightly as one of those heretical conspiracy-type books. When the author discusses things such as life on Mars and the supposed cover up/backtracking of everything it gets to sounding like its on the verge some crazy who has an ax to grind with anyone and anything. Again, this is very slight. It is NOT one of those "the CIA knows everything and we are just the sheep" type books-not even close. It does however, leave that kind of aftertaste after reading a couple of those chapters.

posted by edsword on December 28, 2009

Was this review helpful? Yes  No   Report this review

Most Helpful Critical Review

1 out of 1 people found this review helpful.

Either the equations are messed up or the symbols don't translat

Either the equations are messed up or the symbols don't translate correctly in the electronic version. The authors say they are going to explain relativity using math no more complex than the pythagorean theorum and then claim it isn't a book about "maths" whe...
Either the equations are messed up or the symbols don't translate correctly in the electronic version. The authors say they are going to explain relativity using math no more complex than the pythagorean theorum and then claim it isn't a book about "maths" when they produce a result without explaining how they got there. At a minimum there should be an appendix showing the calculation.

But that isn't the worst part. The authors add symbols without telling you what they are or where they came from. So, on p. 38, the square root of 1/ (c squared - ^ squared) becomes 1/ square root c squared ^ v squared. Huh? Where did v come from? Is it a variable, an operator, what? We don't know because the authors don't say. We know it doesn't mean velocity, because that's what ^ is defined as. Confusing enough, but then further down the same page, the square root c squared ^ v squared becomes ^squared/ c squared, again with no explanation. Thanks for the "maths" lesson guys.


posted by Ladydog on July 18, 2012

Was this review helpful? Yes  No   Report this review
Sort by: Showing all of 11 review with 4 star rating   See All Ratings
Page 1 of 1
  • Anonymous

    Posted August 24, 2010

    very well presented

    They did an exceptional job of presenting this complex topic in down to earth language that explained it far better than any of my physics courses in college.

    3 out of 4 people found this review helpful.

    Was this review helpful? Yes  No   Report this review
  • Posted December 28, 2009

    Great book but...

    I thought the book was great. It really made you think about stuff that maybe a "regular guy" just doesn't get around to thinking about during his typical craziness that is life. I try to read as much science/philosophy books as I can and the chapter about life was particularly fascinating.

    The only thing about the book that I must say really against it (the "but" part of my headline) is that I think it might come across slightly as one of those heretical conspiracy-type books. When the author discusses things such as life on Mars and the supposed cover up/backtracking of everything it gets to sounding like its on the verge some crazy who has an ax to grind with anyone and anything. Again, this is very slight. It is NOT one of those "the CIA knows everything and we are just the sheep" type books-not even close. It does however, leave that kind of aftertaste after reading a couple of those chapters.

    3 out of 6 people found this review helpful.

    Was this review helpful? Yes  No   Report this review
  • Anonymous

    Posted December 6, 2011

    Interesting and fun

    Fun read, casual reading.

    0 out of 3 people found this review helpful.

    Was this review helpful? Yes  No   Report this review
  • Anonymous

    Posted February 28, 2012

    No text was provided for this review.

  • Anonymous

    Posted February 10, 2010

    No text was provided for this review.

  • Anonymous

    Posted January 31, 2010

    No text was provided for this review.

  • Anonymous

    Posted September 25, 2009

    No text was provided for this review.

  • Anonymous

    Posted September 26, 2010

    No text was provided for this review.

  • Anonymous

    Posted November 1, 2009

    No text was provided for this review.

  • Anonymous

    Posted January 4, 2012

    No text was provided for this review.

  • Anonymous

    Posted June 27, 2011

    No text was provided for this review.

Sort by: Showing all of 11 review with 4 star rating   See All Ratings
Page 1 of 1