10 citations · 10 across the 6 of their papers we have counts for
6 papers
Why the same key can open different padlocks?
Fathan Akbar, Mikrajuddin Abdullah
We accidentally observed that one key can open two padlocks from different brands. Based on this observation, here we derived equations to estimate the number of different padlocks…
Minimal Tools for Accurately Measuring the Coefficient of Kinetic Friction
Fathan Akbar, Nova Lailatul Rizkiyah, Mikrajuddin Abdullah
Measuring the coefficient of kinetic friction is much more difficult than that of the static counterpart. Here we report a simple method using minimal tool to accurately measuring…
Interpretation of Past Kingdoms Poems to Reconstruct the Physical Phenomena in the Past: Case of Great Tambora Eruption 1815
Mikrajuddin Abdullah
In this paper I reconstruct the distribution of ash released from great Tambora eruption in 1815. The reconstruction was developed by analyzing the meaning of Poem of Bima Kingdom…
Analytical Solutions for Bending Of Fireworks and Similarities with the Solution of Electromagnetic Wave Diffraction
Fathan Akbar, Mikrajuddin Abdullah
In this paper we examine more deeply about the bending mechanism of rod-shaped fireworks which burned from the free end. We derived new analytic equations. Surprisingly, we obtaine…
New Equation for Bending Development of Arbitrary Rods and Application to Palm Fronds Bending
Mikrajuddin Abdullah
A new general equation to explain bending of arbitrary rods (from arbitrary materials, cross sections, densities, strengthnesses, bending angles, etc) was proposed. This equation c…
Bending of Sparklers
Mikrajuddin Abdullah, Shafira Khairunnisa, Fathan Akbar
A new equation is proposed to explain the curvature of spent sparklers. We found the state of a segment of the sparkler to depend strongly on the state of its spent segments. The e…