Wan Mohd Aimran bin Wan Mohd Kamil

Universiti Kebangsaan Malaysia | ukm · School of Applied Physics

In this study, we explored a new method of cloud detection called the Blue-Green (B-G) Color Difference, which is adapted from the widely used Red-Blue (R-B) Color Difference. The objective of this study was to test the effectiveness of these two methods in detecting daytime clouds. Three all-sky images were selected from a database system at PERMA...

We present the first all-sky map of night sky brightness (NSB) generated from data collected at Pusat PERMATApintar® Negara, Universiti Kebangsaan Malaysia, Bangi, Selangor. The night sky brightness was measured using a Sky Quality Meter (SQM-LU) attached to a customized, homemade mount that enabled the SQM to be oriented to 13 different points on...

The ability of a muon telescope to detect high dense metal elements was experimentally determined in previous works. Recently, the muon absorption has become one of the most important data in the tomography technique. In the present study, the absorption coefficients of muon at ground level for heavy alloys, namely brass, steel and stainless steel...

This is a preliminary survey of astronomy topics incorporated into the Malaysian national school syllabus. Topics directly relevant to astronomy are situated within the general science subject from Year 4 (age 10 years old) until Year 9 (age 15 years old) and are grouped under four main themes: Earth-Sun-Moon system, the Solar System, Stars, and Ex...

Article Type: Original Article Keywords: attenuation coefficient; cosmic ray muon; high density material; metal absorber; muon telescope. Abstract: The absorption of cosmic ray muons was experimentally demonstrated using the telescope which was proposed in our previous work as a portable detector for high-density materials. Recently, attenuation of...

Muons produced in the atmosphere by cosmic rays are preferred over gamma rays, X-rays and fast protons for the detection of metals in the study of radiography. An alternative method for metals detection involving portable and relatively cheap Geiger-Muller counters are proposed. The objective of this study was to investigate the validity of using a...

The absorption of cosmic ray muons was experimentally demonstrated using the telescope which was proposed in our previous work as a portable detector for high-density materials. The complexity of the muon interaction has pushed researchers to use the simulation program (GEANT) that recently showed some discrepancies with observations at high energy...

Muons produced in the atmosphere by cosmic rays are preferred over gamma rays, X-rays and fast protons for the detection of metals in the study of radiography. An alternative method for metals detection involving portable and relatively cheap Geiger-Muller counters are proposed. The objective of this study was to investigate the validity of using a...

Background and Objective: It is important to note the significance of atmospheric turbidity in evaluating local area's air pollution. It also provides vital criteria to control the extinction of solar ultraviolet radiation from reaching the land on cloudless day. This study aims to investigate the dependence of Angstrom's turbidity parameters in th...

This research presents preliminary findings of night sky brightness at the PERMATApintarTM Observatory. The measurements were made using the Unihedron Sky Quality Meter (SQM-LU) attached to the top of a camera tripod. The Sky Quality Meter was directed towards zenith. The data were logged continuously throughout the night from 1910 hours until 0730...

One of the quality parameter of an astronomical site testing is sky brightness. We measure the night sky brightness over PERMATApintar Observatory to obtain the first preliminary sky brightness reading. The measurement is done by using an Unihedron Sky Quality Meter (SQM-LU) with a position pointing zenith. Six measurements have been done during th...

The purpose of this study is to determine the total optical thickness for different atmospheric extinction and for different wavelengths through the visible region. A portable Avantes AvaSpec ULS 2048X64-USB2 spectrometer was used, over Bangi (2° 55’ N, 101° 46’ E, and 50 m above sea level) in Malaysia. Experimental techniques, sample observation,...