shop by category

# equation geek clock

\$30.00

• the story

#### 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.

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 .

Exclusively at UncommonGoods.

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

## You might also like…

• reviews
• q & a

REVIEW SNAPSHOT®

by PowerReviews
EQUATION GEEK CLOCK

4.4

(based on 46 reviews)

Ratings Distribution

• 5 Stars

(29)

• 4 Stars

(12)

• 3 Stars

(2)

• 2 Stars

(1)

• 1 Stars

(2)

93%

of respondents would recommend this to a friend.

Pros

• Attractive (39)
• Clear display (33)
• Keeps good time (17)
• Reliable (15)
• Unique (4)

Cons

No Cons

Best Uses

• Decoration (15)
• Bedroom (8)
• Desk (8)
• Kitchen (4)
• Reviewer Profile:
• Midrange shopper (24), Budget shopper (15)
• Primary use:
• Yes (43), No (3)
• Who was the recipient of this product?:
• Other (18), Child (12), Husband (8), Self (4)
• Christmas or hanukkah (24), Birthday (11), Other (7)

Reviewed by 46 customers

Sort by

Displaying reviews 1-10

Previous | Next »

5.0

Great gift for stellar math student

By

from Cambria, CA

Pros

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

Cons

• NONE OF THE ABOVE

Best Uses

• Bedroom

Great gift for a stellar math grandson!

• Primary use:
• Personal
• Yes
• Who was the recipient of this product?:
• Child
• Birthday

5.0

Very happy geek

By

from Bellingham, WA

Pros

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

Cons

Best Uses

• Decoration

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!!!

• Primary use:
• Personal
• Yes
• Who was the recipient of this product?:
• Father
• Father’s Day

5.0

Very unique

By

from Baltimore, MD

Pros

• Attractive Design
• Clear Display
• Reliable

Cons

Best Uses

• Bedroom
• Decoration
• Desk

Very unique

• Primary use:
• Personal
• Yes
• Who was the recipient of this product?:
• Husband
• Anniversary

4.0

For Fancy Neds

By

from New York, NY

Pros

• Attractive Design
• Clear Display

Cons

Best Uses

• Decoration
• Desk

The clock hangs in my classroom and is a great curiosity for my students.

• Primary use:
• Yes
• Who was the recipient of this product?:
• Self
• Birthday

4.0

Gave this as a gift to a friend

By

from Leesburg, VA

Pros

• Attractive Design

Cons

Best Uses

Our friend was overjoyed to get ths mathematical clock! We gave gifts that were a mathematical/Geek theme!

• Yes
• Who was the recipient of this product?:
• Other
• Birthday

(0 of 1 customers found this review helpful)

4.0

Math Nerd Time!

By

from Sherwood, AR

Pros

• Attractive Design

Cons

Best Uses

• Decoration
• Desk

Great idea, great website. A bit pricey overall.

• Primary use:
• Personal
• Yes
• Who was the recipient of this product?:
• Other
• Other

5.0

Awesome!

By

from Cleveland, Ohio

Pros

• Attractive Design
• Clear Display

Cons

Best Uses

• Decoration

I got this as a gift for my boyfriend. He is studying to be an actuary and this was the perfect gift for him! So excited to give it to him for Christmas. I think he's going to love it. No problems with shipping and the product works great!

• Primary use:
• Personal
• Yes
• Who was the recipient of this product?:
• Other
• Christmas or Hanukkah

5.0

Nice clock

By

from Detroit

Pros

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

Cons

Best Uses

• Desk

Product arrived intact and as pictured. Have not gifted yet, but inserted batteries a couple weeks ago and time is still accurate. Clock is solid and seems well-made. Am happy with my purchase.

• Primary use:
• Personal
• Yes
• Who was the recipient of this product?:
• Child
• Christmas or Hanukkah

5.0

Amazing gift idea for a geek!

By

from Clarksburg, MD

Pros

• Attractive Design
• Keeps Good Time

Cons

Best Uses

There couldn't be a better gift for my nerdy stepdaughter!

• Primary use:
• Personal
• Yes
• Who was the recipient of this product?:
• Other
• Christmas or Hanukkah

5.0

Engineer can tell time!

By

from Galion, OH

Pros

• Attractive Design
• Clear Display
• Tailored For The Math Wiz
• Wonderfully Designed

Cons

Best Uses

My son, who is a computer enginee, loved this clock. It seems it was made specifically with him in mind! He thinks of everything in math formulas. He loved it!

• Primary use:
• Personal
• Yes
• Who was the recipient of this product?:
• Child