SiberSci, LLC

10/31/2025

This is the true meaning of longevity.

Deep beneath the icy waters of the North Atlantic, a Greenland shark continues to swim—an ancient survivor believed to be nearly 400 years old.

This remarkable creature was already gliding through the depths in the 1600s, long before the invention of cars, electricity, or telephones. As empires rose and fell and human civilization advanced through revolutions and discoveries, she remained undisturbed in the cold, dark ocean—a living witness to centuries of change.

Greenland sharks hold the record as the longest-living vertebrates on Earth, with lifespans that can span multiple human eras. One lifetime for this shark has encompassed the invention of the telescope, the rise of industry, the dawn of flight, space exploration, and even the digital age.

Nearly four centuries later, she’s still here—still moving, still enduring, still timeless. 🌊🐋

READ MORE : https://astronomynews.site/?p=345

01/10/2024

Little sneak peak at the spring menu update.

Whistle Stop Burger
Angus beef on our signature brioche bun, topped with our famous Fried Green Tomatoes, fried onion rings, and fried pickles. Served with our special sauce.

What do you think?

12/23/2023

This is an amazing shot of Rock House at Hocking Hills! Thank you Bruce so much for this picture! This is one of my favorites at Hocking Hills.

05/08/2023

The SiberSci, LLC Online Calculator collection (https://sibersci.com/) has been improved and expanded, so enjoy using the following five calculators to determine these parameters.

1. Coax TEM Mode Calculator

a. https://sibersci.com/coax-tem-mode-calculator/

i. TEM Mode Capacitance per Unit Length, Farads/m

ii. TEM Mode Inductance per Unit Length, Henrys/m

iii. TEM Mode Resistance per Unit Length, Ohms/m

iv. TEM Mode Wavelength, m

v. TEM Mode Propagation Constant, Radians/m

vi. TEM Mode Phase Velocity, m/sec

vii. TEM Mode Group Velocity, m/sec

viii. TEM Mode Characteristic Impedance, Ohms

ix. TEM Mode Conductor Attenuation, dB/m

x. TEM Mode Dielectric Attenuation, dB/m

xi. TEM Mode Total Attenuation, dB/m

xii. Cutoff Frequency for the TE1,1 Mode, MHz

2. Rectangular Waveguide TEm,n Calculator

a. https://sibersci.com/rectangular-waveguide-temn-calculator/

i. Cutoff Frequency for a TEm,n mode, MHz

ii. TEm,n Mode Characteristic Impedance, Ohms

iii. TEm,n Mode Guide Wavelength, m

iv. TEm,n Mode Propagation Constant, Radians/m

v. TEm,n Mode Phase Velocity, m/sec

vi. TEm,n Mode Group Velocity, m/sec

vii. TEm,n Mode Attenuation Constant due to Conductor and Dielectric Loss, dB/m

3. Rectangular Waveguide TMm,n Calculator

a. https://sibersci.com/rectangular-waveguide-tmmn-calculator/

i. Cutoff Frequency for a TMm,n mode, MHz

ii. TMm,n Mode Characteristic Impedance, Ohms

iii. TMm,n Mode Guide Wavelength, m

iv. TMm,n Mode Propagation Constant, Radians/m

v. TMm,n Mode Phase Velocity, m/sec

vi. TMm,n Mode Group Velocity, m/sec

vii. TMm,n Mode Attenuation Constant due to Conductor and Dielectric Loss, dB/m

4. Skin Depth Calculator

a. https://sibersci.com/skin-depth-calculator/

i. Calculate Skin Depth, microns for any User Defined Conductivity and Frequency

5. Wavelength Calculator

a. https://sibersci.com/wavelength-calculator/

i. Calculate the:

1. Free Space Wavelength, meters,

2. Free Space Characteristic Impedance, Ohms, and

3. Dielectric Region Velocity of Light, m/sec

a. for a User-Defined Relative Permittivity,

b. User-Defined Relative Permeability, and a

c. User-Defined Frequency.

03/19/2023

There are three (3) calculators on the SiberSci, LLC website, https://sibersci.com/, which include a Wavelength Calculator, a TEm,n Rectangular Waveguide Calculator, and a Skin Depth Calculator.

1. https://sibersci.com/wavelength-calculator/

2. https://sibersci.com/rectangular-waveguide-temn-calculator/

3. https://sibersci.com/skin-depth-calculator/

I plan to add Dielectric Loss to the TEm,n Rectangular Waveguide Calculator in the near future to allow visitors to determine the Total Attenuation for a TE-mode propagating in a Rectangular Waveguide. However, would anyone have interest in using the same style calculator for TM-modes in Rectangular Waveguide? If so, send me a note telling me of your interest in this new calculator.

I am also considering adding a Coax TEM-mode calculator, along with a Cylindrical Waveguide TE- and TM-mode cutoff frequency calculator. If you are interested in these new calculators, then please send me a note telling me of your interest in these new calculators.

Finally, what calculators would you like me to add to https://sibersci.com/? I am open to recommendations, so send me a note with your thoughts on this topic.

Thanks,

Scott

03/19/2023

The SiberSci, LLC website, https://sibersci.com/, has three calculators that are used by a large percentage of engineers working in the electromagnetics industry:

1. https://sibersci.com/wavelength-calculator/

2. https://sibersci.com/rectangular-waveguide-temn-calculator/

3. https://sibersci.com/skin-depth-calculator/

I was surprised in January 2023 when I received an e-mail from Prof. Stepan Lucyszyn, Professor of Millimetre-wave Systems, Imperial College London, notifying me that the equation I was using for calculating the Attenuation for TE-modes in Rectangular Waveguide was providing a number that was too high.

This equation was taken from the classical engineering reference written by S. Ramo, J.R. Whinnery, and T. Van Duzer, Fields and Waves in Communication Electronics, Wiley, 1965. Prof. Lucyszyn provided numerous references to calculations exhibiting lower Attenuation for Rectangular Waveguide TE-modes. I was disappointed that this error in Ramo, Whinnery, and van Duzer had not been recognized previously in its storied half-century of use in the industry.

I set aside time to investigate the problem, and discovered countless derivations of equations for predicting the Attenuation of TE-modes in Rectangular Waveguide. The majority of authors had simplified their derivations to yield an Attenuation equation that is only valid for the dominant Rectangular Waveguide TE1,0 mode, but I wanted a generalized solution that was valid for every TE-mode.

The Attenuation Equation derivation provided by R. Waldron, Theory of Guided Electromagnetic Waves, van Nostrand, 1969 was mathematically rigorous, and it replaced the Attenuation Equation derived by S. Ramo, J.R. Whinnery, and T. Van Duzer. The updated calculator now agrees with the Attenuation predictions provided by Prof. Lucyszyn.

Everyone should thank Prof. Lucyszyn for bringing this calculator problem to my attention.

Thanks,

Scott

03/19/2023

SiberSci, LLC is pleased to announce the successful optimization of our website for Mobile Devices. We have taken the time to ensure that all web pages are included in the update. If you have time and can spare a moment, please visit some or all of these pages and read through them carefully. Should you find any issues or errors that need correcting, we would be immensely grateful if you could let us know about them.

The Mobile-Optimized web pages can be found here:

1. https://sibersci.com/
2. https://sibersci.com/about/
3. https://sibersci.com/engineering-services/
4. https://sibersci.com/antenna-engineering/
5. https://sibersci.com/microwave-engineering/
6. https://sibersci.com/microwave-heating-engineering/
7. https://sibersci.com/millimeter-wave-engineering/
8. https://sibersci.com/rf-engineering/
9. https://sibersci.com/rf-heating-engineering/
10. https://sibersci.com/wavelength-calculator/
11. https://sibersci.com/rectangular-waveguide-temn-calculator/
12. https://sibersci.com/skin-depth-calculator/
13. https://sibersci.com/contact/

Finally, were you aware that you can find us on LinkedIn at https://www.linkedin.com/company/sibersci-llc and also at the Better Business Bureau at https://www.bbb.org/us/ky/owensboro/profile/engineering/sibersci-llc-0402-159161899? If not, please follow us on LinkedIn to learn more about the business, or visit our Better Business Bureau listing for the same reason.

Thanks,

Scott

03/11/2023

Good news - Micro Center is opening a new store in Indianapolis on June 23, so take advantage of seeing the hardware in a store before buying it.

Tech brick-and-mortar retailer expands its footprint.

03/02/2023

Are you interested in Bridgestone's Airless Tires for Cars? It will be interesting to see how the tires perform on rain wet roads, and in snow. Also, how many miles will the tire last?

Bridgestone’s concept takes inflation out of the equation by swapping in a structure consisting of resin spokes.

03/02/2023

Johnson and Johnson is in the process of spinning off its consumer business which manufactures Pepcid and Immodium, and the new business will be named named Kenvue. Will this change the quality of the Pepcid and Immodium products, which many of us rely upon daily.

Johnson & Johnson is cutting the positions as the company prepares to spin out its consumer health business.

03/02/2023

Are you ready for the arrival of Windows 12 and the new AI processors from AMD and Intel? Intel's new Meteor Lake processor will arrive this year, which is the first step in this Windows evolution.

The next version of Windows will focus on AI features.