Geek Clock

$25.00

Time To Embrace Your Inner Geek

While everyone else was watching the clock, you were paying attention during math class, storing away square roots and factorials for a day where you could prove your mathematical prowess.

Well, my geeky friend, that day has come. Pictured before you is a clock, where all the numerals have been replaced by the equivalent notation! How will we ever know what time it is unless you solve them all?

Cheat Sheet (included with each clock):
12 - a radical
1 - Legendre's constant is a mathematical constant occurring in a formula conjectured by Adrien-Marie Legendre to capture the asymptotic behavior of the prime-counting function. Its value is now known to be exactly 1.
2 - A joke in the math world: An infinite number of mathematicians walk into a bar. The first one orders a beer. The second orders half a beer. The third, a quarter of a beer. The bartender says, "You're all idiots," and pours two beers.
3 - A unicode character XML "numeric character reference."
4 - Modular arithmetic, also known as clock arithmetic, is a system of arithmetic for integers, where numbers "wrap around" after they reach a certain value. The modular multiplicative inverse of 2 (mod 7) is the integer /a/ such that 2*/a/ is congruent to 1 modulo 7.
5 - The Golden Mean...reworked a little.
6 - Three factorial (3*2*1=6)
7 - A repeating decimal that is proven to be exactly equal to 7 with Cauchy's Convergence Test.
8 - Graphical representation of binary code.
9 - An example of a base-4 number, which uses the digits 0, 1, 2 and 3 to represent any real number.
10 - A Binomial Coefficient, also known as the choose function. 5 choose 2 is equal to 5! divided by (2!*(5-2)!)
11 A hexadecimal, or base-16, number.



Made in California.

Exclusive Made in the USA
Made from
plastic
Measurements
11.75" dia
Notes
Requires one AA battery, included.
Item ID
18145

Still haven't found the details you're looking for? Check out our Product Q&A!

Most of our items are in stock and will ship quickly. Orders for in-stock items placed before 5pm ET Monday through Friday, excluding Federal holidays, will ship:
Economy shipping:
within 8 days, arriving no later than the 9th business day after the order was placed.
Standard shipping:
within 4 days, arriving 5 business days after the order was placed.
Preferred shipping:
within 2 days, arriving 3 business days after the order was placed.
Expedited shipping:
within 1 day, arriving 2 business days after the order was placed.
Express shipping:
will ship the same day and arrive 1 business day later.



Geek Clock has been discontinued. When it sells out, it will no longer be available.

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REVIEW SNAPSHOT®

by PowerReviews
Geek Clock
 
4.4

(based on 619 reviews)

Ratings Distribution

  • 5 Stars

     

    (333)

  • 4 Stars

     

    (223)

  • 3 Stars

     

    (33)

  • 2 Stars

     

    (12)

  • 1 Stars

     

    (18)

94%

of respondents would recommend this to a friend.

Pros

  • Attractive (495)
  • Clear display (477)
  • Keeps good time (281)
  • Reliable (238)
  • Unique (17)

Cons

  • Unreliable (14)
  • Unattractive design (10)
  • Inaccurate (9)
  • Poor quality (7)
  • Difficult to read display (5)

Best Uses

  • Gifts (288)
  • Decoration (249)
  • Desk (165)
  • Bedroom (97)
  • Kitchen (51)
    • Reviewer Profile:
    • Midrange shopper (376), Budget shopper (174), High-end shopper (26)
    • Primary use:
    • Personal (504), Business (66)
    • Was this a gift?:
    • Yes (348), No (43)
    • For what occasion did you purchase this product?:
    • Christmas or hanukkah (26), Birthday (8), Other (6)

Reviewed by 619 customers

Displaying reviews 401-410

Back to top

 
5.0

Wow what a clock

By 

from Middleton, WI

About Me Midrange Shopper

Verified Buyer

Pros

  • Attractive Design
  • Clear Display
  • Keeps Good Time
  • Reliable

Cons

    Best Uses

    • Bedroom

    Comments about Geek Clock:

    My son, who is completing his master's degree, thought this clock was awesome. Of course, he didn't know all the equations but that was part of the attractiveness of this clock. Just looking at it and trying to figure out what each equation meant was intriguing even though we had to cheat on five of them.

    Thanks very much for such a unique gift.

    • Primary use:
    • Personal
    • Was this a gift?:
    • Yes
     
    5.0

    Unique teacher gift.

    By 

    from san jose, ca

    About Me Midrange Shopper

    Verified Buyer

    Pros

    • Attractive Design
    • Clear Display
    • Fun
    • Keeps Good Time
    • Reliable

    Cons

      Best Uses

      • Gifts

      Comments about Geek Clock:

      This popped off the page as the perfect gift for a beloved math teacher.

      • Primary use:
      • Personal
      • Was this a gift?:
      • Yes
       
      4.0

      What the ...?

      By 

      from Jersey City, NJ

      About Me Budget Shopper

      Verified Buyer

      Pros

      • Attractive Design
      • Clear Display
      • Keeps Good Time
      • Reliable

      Cons

        Best Uses

        • Desk
        • Gifts

        Comments about Geek Clock:

        Great idea and a fun gift.
        I would be happy to pay extra for a more substantial (read "less plastic") construction.

        • Primary use:
        • Personal
        • Was this a gift?:
        • Yes
         
        4.0

        Awesome clock

        By 

        from new york, NY

        About Me Budget Shopper

        Verified Buyer

        Pros

        • Attractive Design
        • Clear Display

        Cons

          Best Uses

          • Gifts

          Comments about Geek Clock:

          Very good present for somebody who is crazy about math!

          Service and delivery comments:

          Prompt delivery

          • Primary use:
          • Personal
          • Was this a gift?:
          • Yes
           
          4.0

          Great gift!

          By 

          from Los Angeles, CA

          About Me Midrange Shopper

          Verified Buyer

          Pros

          • Attractive Design
          • Clear Display
          • Reliable

          Cons

            Best Uses

            • Math Classroom

            Comments about Geek Clock:

            Gave it as a Christmas gift and the recipient loved it! Comes with a "cheat sheet!"

            • Primary use:
            • Personal
            • Was this a gift?:
            • Yes
             
            5.0

            The clock is great for any math geek/

            By 

            from Brooklyn, New York

            About Me Budget Shopper

            Verified Buyer

            Pros

            • Attractive Design
            • Clear Display
            • Keeps Good Time
            • Reliable

            Cons

              Best Uses

              • Bedroom

              Comments about Geek Clock:

              I will use this clock in my dorm room.

              • Primary use:
              • Personal
              • Was this a gift?:
              • Yes
               
              4.0

              Fun Gift

              By 

              from VA

              About Me Budget Shopper

              Verified Buyer

              Pros

              • Attractive Design
              • Clear Display
              • Keeps Good Time

              Cons

              • Plastic frame looks cheap

              Best Uses

              • Gag gift
              • Office Wall

              Comments about Geek Clock:

              Great gift for the person who loves math, science and/or engineering. Makes a fun graduation gift too. Original and thoughtful design, but clock is all plastic and looks cheap. Great conversation starter!

              Service and delivery comments:

              Prompt delivery and product arrived in good condition. Very pleased.

              • Primary use:
              • Personal
              • Was this a gift?:
              • Yes
               
              5.0

              geek clock

              By 

              from Georgia

              About Me Midrange Shopper

              Verified Buyer

              Pros

              • Attractive Design

              Cons

                Best Uses

                • Gifts

                Comments about Geek Clock:

                This product was a gift for my finance, who is a teacher, so this was perfect. I love the geekiness of it.

                • Primary use:
                • Personal
                • Was this a gift?:
                • Yes
                 
                5.0

                Our son loves this clock@

                By 

                from Franklin TN

                About Me Midrange Shopper

                Verified Buyer

                Pros

                • Clear Display
                • Kitchy

                Cons

                  Best Uses

                  • Desk
                  • Gifts

                  Comments about Geek Clock:

                  Our son is a physics/math major in his sophomore year and the minute we saw the clock in your catalogue we knew that he would love it - and he does! Perfect gift!

                  • Primary use:
                  • Personal
                  • Was this a gift?:
                  • Yes
                   
                  5.0

                  Great gift for math major

                  By 

                  from Silver Spring MD

                  Verified Buyer

                  Pros

                  • Attractive Design
                  • Clear Display

                  Cons

                    Best Uses

                    • Desk

                    Comments about Geek Clock:

                    Given as a gift

                    • Primary use:
                    • Personal
                    • Was this a gift?:
                    • Yes

                    Displaying reviews 401-410

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