Equation Geek Clock

Add a mathematical twist to the everyday with this equation wall clock.

$30.00

Above Average Arithmetic

Learning to tell time is so grade school. Indulge your inner geek and accept a new challenge with this nerdy clock. Each numerical hour of the day is spelled out with a different mathematical notation, giving you a new mathematical boost with each time check. For nascent mathematicians and victims of the occasional memory lapse, a cheat sheet is included with each clock:

1: i is equal to the square root of -1, so i^2= -1. The absolute value of -1 is 1.
2: This represents 2 in binary code.
3: The cube root of 27
4: 11 base 3, which represents 4 in the ternary system
5: Log(20x)=2 is equivalent to 20x=10^2 or 20x=100, where x=5.
6: Euler's product formula: phi(p^k)=(p^k)(1-(1/p)), where (p^k)=9
7: This is a binomial coefficient, so with the formula n/k = (n!)/((k!)(n-k)!), n/k=7.
8: This is a natural logarithm where ln(e^x)=x, so ln(e^8)=8.
9: This summation is equal to 3(1)+3(2)=3+6=9.
10: Since clocks "wrap around" every 12 hours, the hour number starts over after it reaches 12. This is arithmetic modulo 12. 10mod12 is 10:00, and 16mod12 would be 4:00, for example.
11: B'L is Legendre's constant, which is equal to 1, so this equation becomes the square root of 121, which is 11.
12: Hexadecimal representation of 12

Clock movement, aluminum bezel, and glass cover made in China. Clock dial and hands made in USA. Assembled in Los Angeles, CA.



For more geeky timepieces, check out the Equation Geek Watch .

Exclusive
Made from
aluminum, plastic, glass
Measurements
10" dia.
Care
Dust with dry, clean cloth. Requires one AA battery, included. Replace batteries when used to prevent corrosion in battery compartment.
Item ID
22254

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.

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REVIEW SNAPSHOT®

by PowerReviews
UncommonGoodsEquation Geek Clock
 
4.5

(based on 68 reviews)

Ratings Distribution

  • 5 Stars

     

    (46)

  • 4 Stars

     

    (16)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (2)

94%

of respondents would recommend this to a friend.

Pros

  • Attractive (55)
  • Clear display (47)
  • Keeps good time (26)
  • Reliable (23)
  • Unique (5)

Cons

No Cons

Best Uses

  • Gifts (32)
  • Decoration (21)
  • Desk (12)
  • Bedroom (11)
  • Kitchen (7)
    • Reviewer Profile:
    • Midrange shopper (36), Budget shopper (19), High-end shopper (3)
    • Primary use:
    • Personal (55), Business (6)
    • Was this a gift?:
    • Yes (58), No (6)

Most Liked Positive Review

 

Very happy geek

After reading lots of reviews, I gave this clock to my father-in-law for Father's Day and was pleasantly surprised. Others had complained about the second hand and he received his clock in perfect functioning...Read complete review

After reading lots of reviews, I gave this clock to my father-in-law for Father's Day and was pleasantly surprised. Others had complained about the second hand and he received his clock in perfect functioning order. With him being a retired electrical engineer that made a living building satellites, I was worried that the equations would be too simple for him, but he LOVED it!!! He said that it was nice that the clock reminded him of math he hadn't used in years. He was thrilled that it had a second hand because he has put the clock up in his garage (at my suggestion) for while he is working on his functioning model steam locomotives. It helps him do some very precise timing that is needed when doing "steam ups". He is a very happy Dad. Thank you!!!

VS

Most Liked Negative Review

 

great gift, may need repair

I received this as a gift this christmas, the minute hand was hanging. It was quickly replaced (thanks!), with the same problem. I figured out how to fix it (a quick...Read complete review

I received this as a gift this christmas, the minute hand was hanging. It was quickly replaced (thanks!), with the same problem. I figured out how to fix it (a quick fix to open up the back of the clock and take it apart) but the problem is the minute hand doesn't have a groove to snap in place. Design flaw. After this repair, it's running great, it's very attractive, and fun to have in my house. I would recommend this to a friend who is comfortable taking things apart.

Reviewed by 68 customers

Displaying reviews 1-10

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5.0

Best Equation Clock I found

By 

from Ozawkie KS

About Me Budget Shopper

Verified Buyer

Pros

  • Attractive Design
  • Clear Display

Cons

    Best Uses

    • Classroom
    • Gifts
    • Kitchen

    Comments about UncommonGoods Equation Geek Clock:

    Lots of versions of this concept, but this is the best one. Equations on it are sufficiently obscure to remain a challenge, and the typeface is clear.

    • Primary use:
    • Business

    (1 of 1 customers found this review helpful)

     
    5.0

    Conversation piece

    By 

    from Zephyr Cove, Nevada

    About Me Midrange Shopper

    Verified Buyer

    Pros

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

    Cons

      Best Uses

        Comments about UncommonGoods Equation Geek Clock:

        Placed in guest room/man cave

        • Primary use:
        • Personal
         
        5.0

        He LOVED it!

        By 

        from Lovell, ME

        About Me Midrange Shopper

        Verified Buyer

        Pros

        • Attractive Design
        • Clear Display

        Cons

        • None

        Best Uses

        • Bedroom
        • Decoration
        • Gifts

        Comments about UncommonGoods Equation Geek Clock:

        He is a difficult person to buy for. Never asks for anything (since he was 6!). But this was right up his ally since math and physics go hand in hand! He hung it on his bedroom wall as soon as he got home.

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

        (1 of 1 customers found this review helpful)

         
        5.0

        For the Math Geek

        By 

        from Hudson NH

        About Me Midrange Shopper

        Verified Buyer

        Pros

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

        Cons

          Best Uses

            Comments about UncommonGoods Equation Geek Clock:

            My son is a math whiz and he got a kick out of this clock.

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

            Made a great gift!

            By 

            from New York, NY

            About Me Budget Shopper

            Verified Buyer

            Pros

            • Attractive Design
            • Clear Display

            Cons

              Best Uses

              • Bedroom
              • Decoration

              Comments about UncommonGoods Equation Geek Clock:

              Most attractive clock design of any similar items I've found! My brother really loved it and enjoyed proving how he knew each equation correlated to each number hour.

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

              I would purchase this item again!

              By 

              from Shawnee, Kansas 66226

              About Me Midrange Shopper

              Verified Buyer

              Pros

              • Attractive Design
              • Clear Display
              • Reliable

              Cons

                Best Uses

                • Decoration
                • Desk
                • Gifts

                Comments about UncommonGoods Equation Geek Clock:

                Purchased this as a gift for my son who loves Mathmatics. He loved it!

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

                Our 13yo boy who is into math found it "cool"

                By 

                from Ohio

                Verified Buyer

                Comments about UncommonGoods Equation Geek Clock:

                See above

                • Was this a gift?:
                • Yes
                 
                4.0

                Nice clock

                By 

                from Los Angeles Area, California

                About Me Midrange Shopper

                Verified Buyer

                Pros

                • Attractive Design

                Cons

                • back plate looks warped, likely printed on paper

                Best Uses

                  Comments about UncommonGoods Equation Geek Clock:

                  This is a very attractive clock, and usually a conversation piece. I wish the back plate was made of a higher quality print than paper. The back plate looks warped, which makes the clock look cheaply made.

                  Service and delivery comments:

                  The service and delivery was exceptional and the clock was properly packaged.

                  • Primary use:
                  • Personal
                  • Was this a gift?:
                  • No
                   
                  5.0

                  Enviable gift for Geek!

                  By 

                  from Space coast, Florida

                  About Me Midrange Shopper

                  Verified Buyer

                  Pros

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

                  Cons

                    Best Uses

                    • Decoration
                    • Desk

                    Comments about UncommonGoods Equation Geek Clock:

                    Fun and functional design! My husband started playing with the equations as soon as he got it. Would consider this as a gift for others.

                    • Primary use:
                    • Personal
                     
                    4.0

                    Good gift

                    By 

                    from Denver

                    Verified Buyer

                    Comments about UncommonGoods Equation Geek Clock:

                    Unique design

                    • Was this a gift?:
                    • Yes

                    Displaying reviews 1-10

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