# 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.

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
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 70 reviews)

Ratings Distribution

• 5 Stars

(46)

• 4 Stars

(18)

• 3 Stars

(2)

• 2 Stars

(2)

• 1 Stars

(2)

94%

of respondents would recommend this to a friend.

Pros

• Attractive (57)
• Clear display (49)
• Keeps good time (26)
• Reliable (23)
• Unique (5)

Cons

No Cons

Best Uses

• Decoration (23)
• Desk (13)
• Bedroom (12)
• Kitchen (7)
• Reviewer Profile:
• Midrange shopper (37), Budget shopper (19), High-end shopper (3)
• Primary use:
• 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

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 70 customers

Displaying reviews 1-10

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(1 of 1 customers found this review helpful)

4.0

A clock for nerds! (and that's a good thing)

By

from San Diego, CA

Pros

• Attractive Design
• Clear Display

Cons

Best Uses

• Decoration
• Desk

Great idea for a clock and it has a nice, clean design. The only downside is the minute markings....there's one extra between each hour marking, so according to the clock, there are 72 minutes in an hour. Not really a huge deal as you can still get a good idea of the time, but you'd think someone who figured out all these advanced equations would also be able to count

• Primary use:
• Personal

4.0

Fun and Different!

By

from NY

Pros

• Attractive Design
• Clear Display

Cons

• would have preferred a little smaller size

Best Uses

• Bedroom
• Decoration

Love that it comes with problems solved as there is no way I could do the math-even with the answer

• Primary use:
• Personal

5.0

Best Equation Clock I found

By

from Ozawkie KS

Pros

• Attractive Design
• Clear Display

Cons

Best Uses

• Classroom
• Kitchen

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:

(1 of 1 customers found this review helpful)

5.0

Conversation piece

By

Pros

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

Cons

Best Uses

Placed in guest room/man cave

• Primary use:
• Personal

5.0

He LOVED it!

By

from Lovell, ME

Pros

• Attractive Design
• Clear Display

Cons

• None

Best Uses

• Bedroom
• Decoration

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
• Yes

(1 of 1 customers found this review helpful)

5.0

For the Math Geek

By

from Hudson NH

Pros

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

Cons

Best Uses

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

• Primary use:
• Personal
• Yes

5.0

By

from New York, NY

Pros

• Attractive Design
• Clear Display

Cons

Best Uses

• Bedroom
• Decoration

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
• Yes

5.0

By

from Shawnee, Kansas 66226

Pros

• Attractive Design
• Clear Display
• Reliable

Cons

Best Uses

• Decoration
• Desk

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

• Primary use:
• Personal
• Yes

(1 of 1 customers found this review helpful)

5.0

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

By

from Ohio

See above

• Yes

(1 of 1 customers found this review helpful)

4.0

Nice clock

By

from Los Angeles Area, California

Pros

• Attractive Design

Cons

• back plate looks warped, likely printed on paper

Best Uses

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.

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

• Primary use:
• Personal
• No

Displaying reviews 1-10

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